--There is somebody knocking at the door. Who________ it be?
--I’m not sure. It ________ be a postman.
| A．may; must | B．will; can |
| C．can ; may | D．may ; will |
Science is _____ difficult for some students ____ learn, so many of them don’t like it.
| A．enough, to | B．too, to |
| C．so, to | D．much , to |
【原创】There are so many kinds of pens in the shop ,I can’t decide ＿＿.
| A．when to buy |
| B．where to buy |
| C．what to buy |
| D．which to buy |
—I will go to Dalian with my parents next month. —________
| A．Well done | B．Have a good trip |
| C．What a pity | D．How time flies! |
He hardly worries about his English, _______ ?
| A． doesn’t he | B．does he |
| C．is he | D．all right |
animals are in danger and there will be space for them if we don’t take any actions.
| A．More and more, more and more |
| B．Less and less, less and less |
| C．More and more, less and less |
| D．Less and less, more and more |