In the advanced course students must take performance tests at monthly______.
| A．gaps | B．intervals | C．length | D．distance |
You have _____ me. I didn’t refer to anyone here when I mentioned that at the meeting. What I wanted to say was that such a mistake could have been avoided.
| A．misheard | B．misled | C．misunderstood | D．misread |
Early American settlers were great_____ -- they could build almost anything from wood.
| A．engineers | B．carpenters | C．builders | D．entertainers |
– Do you know _____ yesterday?
– It was at 8 o’clock in the morning.
| A．when did she come |
| B．when was it that she came |
| C．when she came |
| D．when it was that she came |
These natural disasters have warned us that everyone should start to protect the _____ immediately.
| A．amusement | B．development | C．environment | D．Movement |
A highway bridge ______over the river. They hope to finish it next month.
| A．was built | B．is built | C．has been built | D．is being built |