—Could I borrow your computer. Bob?
—Sorry, I am______ it.
A. taking out B. turning on C. working on
Mr. Smith spoke slowly and clearly to make himself ______.
| A．understood | B．Understand |
| C．understands | D．understanding |
As the largest developing country, China since it was founded in 1949.
| A．made great progress | B．has made great progress |
| C．made a decision | D．has made mistakes |
—Do you take music lessons in Grade Nine?
—No, but it’s reported that a new Canadian study shows young children __________take music lessons have better memories.
| A．whom | B．which | C．who | D．what |
There will be a stamp show in the museum ______ we visited last week.
| A．who | B．when | C．which | D．what |
I’ll never forget the day_____ the great scientist came to our school and gave us a speech.
| A．that | B．which | C．when | D．where |