. I forgot ________ my exercise-book with me, so I can’t lend it to you now.
____ in thought, he almost ran into the car in front him.
— Good morning, can I help you? — I’d like to have this watch _______.
Look at the trouble we’re in. If only we _____ our teacher’s advice. A. had taken B would have taken C. took D. have taken
I tried my best, but I couldn’t _____ the driving tests.
He was _____ down for some days after he heard that he didn’t pass the exam.