--What is our physics teacher like, do you know?
--Oh, he is very kind _________ he looks very serious.
| A．because | B．though |
| C．if | D．when |
He was riding to school it began to rain.
| A．as | B．so | C．while | D．when |
---What ________ he say to you just now?
---He told me that he ________ his key in the room.
| A．did; leave | B．does; left | C．did; had left | D．do; had left |
I love the dress. It’s ________.
| A．out of style | B．in style | C．inthe style | D．out style |
Teachers often tell us in the river after school.
| A．don’t swim | B．not swim | C．not to swim | D．swim |
____________ they are brothers, they look like each other.
| A．Because | B．Though | C．When | D．So |