You must keep on working in the evening, you are sure you can finish the task in time.
| A．as |
| B．if |
| C．when |
| D．unless |
One of the most important things in education is to let students ____ positive emotions and experience in the process of their learning.
| A．require | B．acquire | C．demand | D．clarify |
––– I felt left out at the party last night.
––– Really? ____, you should have said something.
| A．If possible | B．If so | C．If necessary | D．If any |
Where were you at supper time? I ____ for you to join me.
| A．waited | B．had waited | C．have been waiting | D．was waiting |
––– I promise my daughter ____ get a nice present on her birthday.
––– I think it will be a big surprise to her.
| A．must | B．shall | C．might | D．need |
––– Could I use your phone for a moment?
––– ______. Help yourself.
| A．Take your time | B．Forget it |
| C．By all means | D．Never mind |