He
__________ to stay up all night, but he fell asleep. ()
A: automated
B: tried
C: service
D: trying
__________ to stay up all night, but he fell asleep. ()
A: automated
B: tried
C: service
D: trying
举一反三
- I stayed up all night trying to find a new _____ to he problem.
- Last night he woke up covered with cold _____. He dreamed that he fell off the mountain.
- I stayed up all night（）to find a new solution to the problem. A: had tried B: try C: trying D: tried
- I stayed up all night ______ to find a new solution to the problem A: trying B: have tried C: try D: tried
- He fell asleep while he _______________ (read) a book.