I'm going through the exercises Allen & Greenough's Latin Composition, an Elementary Guide to Writing in Latin (1888). It's a companion book to Latin Grammar for Schools and Colleges (1888), the one before the major 1903 revision.
The composition book is super useful, because starting on page 87 is an English-Latin vocabulary containing I'd say 99% of the words used in the exercises, which makes choice of words easy. There are also hints in the exercises about what words should be used for certain phrases.
Since I can find no answer key, can I get anyone to look over my answers? Here is the first exercise.
Exercise 1: Apposition
1. The consul Caius(1) Flaminius defeated the Insubrians(2). The next consuls, Scipio and Marcellus, continued the war. Marcellus slew Viridomarus, chief of the Insubrians, and Scipio his collegue took Milan, their chief town.
C. Flaminius consul Insubres superavit. Scipio et Marcellus consules proximi bellum persecuti sunt. Marcellus Viridomarum ducem Insubrum interfecit et Scipio collega Mediolanum caput gentis cepit.
2. Give this message(3) to Tarquinius, your king.
Tarquinio regi tuo haec nuntia.
3. O Father Tiber, take me [into thy charge] and bear me up.
Tibere Pater, cape me et me sustine.
4. We have sworn together, three hundred noble youths, against Porsena.
Trecenti pueri nobiles contra Porsenam coniuravimus.
5. Bocchus was gained over to the Roman cause by Sulla, the quaestor of Marius.
Bocchus a Sulla quaestore Marii ad causam Romanam conciliatus est.
6. The consul Publius Rupilius brought the Servile War to an end by the capture of Tauromenium and Enna, the two strongholds of the insurgents.
P. Rupilius consul expugnatione Tauromenii et Ennae duorum praesidiorum seditionum Bellum Servilem confecit.
7. Sempronia, the only sister of Tiberius Gracchus, was married to the younger Scipio Africanus.
Sempronia sola soror T. Gracchi Scipioni Africano Minori nupta est.
8. The next year, Lucius Cornelius Scipio, brother of the great Africanus, and Caius Laelius, the intimate-friend of the latter(4), were consuls.
Anno proximo L. Cornelius Scipio frater Africani magni et C. Laelius familiaris eiusdem erant consules.
9. The Illyrians were a nation of pirates.
Ilyrii erant natio praedonum.
10. The she-wolf acted [as a] mother.
Lupa mater egit.
11. The Academy introduced a new [branch of] knowledge [viz.] to know nothing.
Academia novam scientiam nihil scire induxit.
12. Demetrius, an unprincipled Greek, surrendered to the Romans the important island [of] Corcyra.
Demetrius Graecus improbus Romanis insulam potentem Corcyram dedidit.
13. Marius and Cicero were born at Arpinum, a free-town of Latium.
Marius et Cicero apud Arpinum municipium Latii nati sunt.
(1) Praenomens (as Caius) are always to be abbreviated. The name must here precede the title.
(3) Literally, "Report these [things]."