_______you worked late yesterday, you need ’t have come this morning.
| A．Unless | B．Though | C．Once | D．As |
See what you have done! Don’t you have a ______ of right or wrong?
| A．thought | B．feeling | C．sense | D．knowledge |
I got ______ bad toothache yesterday, which kept me awake ______ whole night.
| A．a; the | B．不填; a | C．the; a | D．a; 不填 |
Greenhouse phenomena would cause ______ rise in sea levels worldwide and change ______ weather on the earth.
| A．a; the | B．the; 不填 | C．a; 不填 | D．不填; the |
He left ______ with my secretary that he would call again in the afternoon. He said he would keep ______.
| A．words; his words | B．word; his word |
| C．word; word | D．the word; his words |
Shelly prepared carefully for her English examination so that she could be sure of passing it at her first ______.
| A．term | B．purpose | C．attempt | D．time |