—What are they doing at the bus stop？
—They are waiting for a bus________.
| A．to come |
| B．come |
| C．coming |
| D．to coming |
--I’m worried about my math exam.
---______.I believe you can pass it.
| A．Thanks a lot | B．I’m sorry |
| C．Take it easy | D．It doesn’t matter |
A group of middle school students spent two weeks ____the jungle.
| A．trekking across | B． to trek across |
| C． to trek through | D． trekking through |
She doesn’t have a pen ____.
| A． writing with | B． to write with |
| C． to write | D． write |
___ is said that _____ tourists visit this city every day.
| A．That； thousands of | B．It； five thousand of |
| C．It； thousands of | D．This； three thousand |
How much does the ticket ____ from Shanghai to Beijing?
| A．cost | B．spent | C．take | D．pay |