Allow children the space to voice their opinions, ______ they are different from your own.
| A．as if | B．even if | C．unless | D．until |
—What has made him upset recently?
—_______ alone to face a troublesome milk case．
| A．Left | B．Being left | C．Having left | D．To leave |
—What are you doing, John? Why stop?
—To be on the safe side, we’d fill up the car now for we _______ run out of gas on the way．
| A．must | B．will | C．might | D．should |
When he realized the police had spotted him, the man _______the exit as quickly as possible．
| A．made off | B．made for | C．made out | D．made up |
Bill Gates has created a wonderful “window” ______ people can surf the Internet freely．
| A．that | B．which | C．where | D．when |
—Where is Tom?
—Well, he______ you_______ here．Otherwise he would come down right now．
| A．didn’t know；were | B．hasn’t known；are |
| C．doesn’t know；are | D．hadn’t known；were |