—Is the letter from your mother?
—Yes.But she ________the letter herself，because she doesn’t even know one word.
| A．needn’t have written | B．can’t have written |
| C．might not have written | D．should not have written |
—Why is Mr. Li so happy this morning?
—Because he was honoured with a(n)______ for excellence in teaching.
| A．present | B．gift | C．award | D．reward |
________ you are interested in astronomy, you can read the book.
| A．Even if | B．Now that | C．Unless | D．As soon as |
After the new technique was introduced, the factory produced ______ tractors in 1998 as the year before.
| A．as twice many | B．as many twice |
| C．twice as many | D．twice many as |
—Do you know the tall man ______ to Mr. King over there?
—Sorry, I don’t know him.
| A．to speak | B．speaking | C．is speaking | D．has spoken |
. Can you ______ your sister from that group of girls?
| A．bring out | B．pick up | C．pick out | D．bring up |