_______ Tom, we wouldn’t have been late for the last bus.
| A．If we didn’t wait for | B．If we haven’t waited for |
| C．we hadn’t waited for | D．Had we not waited for |
They asked the teacher _______.
| A．when will they have the exam |
| B．when they would have the exam |
| C．when they have the exam |
| D．when would they have the exam |
Ten minutes has been made full _______ of ________ the problem.
| A．using ; studying | B．use ; to study |
| C．to use ; to study | D．use ; studying |
Tom is so lazy that it is the third time that he ______ late this week.
| A．has came | B．is coming | C．came | D．has come |
_______ on the fact, the report should be reliable.
| A．Basing | B．To be base | C．Based | D．To base |
John is a creative person. He can often _____ ideas that are surprising to his classmates.
| A．come across | B．come up to | C．come up with | D．come into |