It is important to make new laws and create international standards for these laws similar to _______ concerning international airspace.
| A．what | B．that | C．those | D．it |
I listened to Dr．Smith’s lecture about biology，but I failed to get its key .
| A．words | B．notes | C．messages | D．points |
The professor, as well as his wife， see a film tonight．
| A．is | B．is going to | C．are going to | D．have gone to |
In the interview, he was asked the same question he would like to apply for that job.
| A．where | B．that | C．as | D．why |
Don’t to tell us if you have a problem．We’re friends，aren’t we?
| A．worry | B．apologize | C．promise | D．hesitate |
一一Helen, will you be at the party tonight?
一一Yes，but I really as I have so much homework to do．
| A．can’t | B．mustn’t | C．shouldn’t | D．won’t |