In order not to be disturbed, I spend three days _______ in my study.
| A．locking | B．locked | C．to lock | D．lock |
The professor sort of dislikes the student, because he always asks some questions that have nothing to _______ his lessons.
| A．deal with | B．do with | C．connecting with | D．go with |
--- What did he say? ---- He said he ________ the sentence in his own words.
| A．was considering to explain | B．considered how to explaining |
| C．would consider to explain | D．was considering explaining |
I have no doubt in my mind______ they will be glad to see me.
| A．if | B．whether | C．that | D．about |
With the help of high technology, many new substances（物质）______in the past years.
| A．discovered | B．have discovered | C．had been discovered | D．have been discovered |
---- Will Joe attend the party? ----- If his wife won’t go to the party,_________.
| A．he will either | B．neither does he | C．he neither will | D．neither will he |