Humans are polluting the earth day by day, ________, of course, will cause punishment sooner or later.
| A．that | B．it | C．which | D．what |
I’ll probably see you on Sunday； ， it will be on Monday.
| A．thus | B．then | C．after all | D．if not |
She is so ______ that no one can ever persuade her.
| A．reliable | B．stubborn | C．artificial | D．intelligent |
It is not_______ for me to return all the books to the library now because I still need them.
| A．difficult | B．convenient | C．available | D．important |
Yesterday our head teacher made such an speech that we all felt .
| A．exciting； exciting | B．excited； excited |
| C．exciting； excited | D．excited； exciting |
—Do you think our teacher is ？
—Yes， he always corrects our homework and prepares his lessons .
| A．careful； careful | B．careful； carefully |
| C．carefully； carefully | D．carefully； careful |