— How do you study for a test?— I study _____working with a group.
| A．for | B．with | C．on | D．by |
A lot of trees________on the hill yesterday．
| A．are planted |
| B．will be planted |
| C．have been planted |
| D．were planted |
He likes reading very much．Most of his money________on books．
| A．is spent |
| B．spend |
| C．spends |
| D．are spent |
—Why are you late，Jim？
—Because there________a lot of traffic when I came here．
| A．is |
| B．are |
| C．was |
| D．were |
—Mike，why are you watching TV again？
—I________my homework．
| A．finish |
| B．finished |
| C．have finished |
| D．had finished |
________energy，turn off the hot water after you take a shower．
| A．Save |
| B．Saving |
| C．Saved |
| D．To save |