(27) Strange ( ), I didn't really enjoy the musical.
Isaid
2to say
(28) Jim ( A ) coffee ( B
(A) Dkept drinking
(B) ①because he stayed
③say
④saying
) awake, but he still couldn't keep his eyes, open.
kept to drink ③was keeping drinking was keeping to drink
for staying ③since he stayed to stay
(29) Which sentence is grammatically correct?