This pair of trousers looks very nice. Can I _______?
| A．try on it | B．try on them |
| C．try it on | D．try them on |
We will see __________ even stronger China in __________ near future.
| A．a; the | B．an; the |
| C．the; a | D．an; a |
It ______ me three hours to finish the work.
| A．pay | B． took | C．spent | D．cost |
Finally, Mary made the baby ______ and the baby began to laugh.
| A．stop to cry | B．to stop crying |
| C．stop crying | D．to stop to cry |
---I’m sorry to keep you waiting.
--- It doesn’t matter. I ____ here for only a few minutes.
| A．have been | B．was |
| C．had been | D．will be |
I find ____ difficult to study English well, though I am still young.
| A．that | B．it | C．this | D．they |