We couldn’t see the road clearly _______ the heavy snow.
| A．because | B．because of |
| C．so | D．Though |
─Which dress is _____, the blue one or the yellow one?
─It depends on you.
| A．beautiful | B．more beautiful |
| C．most beautiful | D．the most beautiful |
Laura __________ in the office for 4 hours. Tell her to have a rest, please.
| A．works | B．was working | C．worked | D．has worked |
— __________ we leave the library before 5 o’clock?
— No, you needn’t. You can stay here until 5:30.
| A．Must | B．May | C．Can | D．Could |
We had a bad weekend. It ________ all the time.
| A．rains | B．has rained | C．is raining | D．was raining |
─I’m checking my email. What about you?
─I ________ photos to Chris.
| A．send | B．am sending | C．sent | D．have sent |