. The purpose of new technologies is to make life easier, ______ it more difficult.
| A．not make | B．not to make | C．not making | D．do not make |
The students in our school each ______ an English dictionary.
| A．are having | B．had | C．has | D．have |
More than one answer ______ to the question.
| A．had given | B．were given |
| C．has been given | D．have been given |
What did they do after they _______?
| A．had returned back | B．had come back |
| C．have come | D．were to return |
. It’s wise to ______ the thing in the fridge in hot summer.
| A．preserve | B．protect |
| C．prevent | D．present |
Bob’s doctor suggests ________ for a few weeks.
| A．that he is resting | B．he rest |
| C．he resting | D．him to rest |