问题

Why did you go back to the classroom?- I left my friend Tom _______ there.[ ]

A: wait
B: to wait
C: waiting
D: waits

正确答案是：

同类题型

The instructor asked us to list anything in our past that we felt __________ of, regretted and read our lists aloud. [ ]

When we get on the bus, we should wait .

How long did it________ you to finish the task lastmonth

____ beautiful flowers!

I won’t tell the student the answer to the math problem until he____on it for more than an hour.[ ]