It’s really __________ comfort to the professor that his son has been admitted to __________ Harvard University．
| A．a , / | B．the ，/ | C．/ ，the | D．the，the |
Science has given clear evidence ______ smoking can lead to many diseases.
| A．what | B．which | C．that | D．where |
We admire this family, ______ the parents treat their child like a friend.
| A．why | B．which | C．where | D．that |
The weather in Inner Mongolia is always dry, but sometimes it _____ rain heavily.
| A．need | B．can | C．must | D．shall |
No pleasure can equal ______ of having a good sleep after hard work.
| A．that | B．one | C．it | D．those |
--- Hi Mike, are you busy now?
--- Not really. I _____ my work, and I’m going to see a movie online.
| A．did | B．have been doing |
| C．had done | D．have done |