7.To learn a foreign language is very important.

KEY:

6.To pronounce a long word is often difficult.

5.To walk in the garden is pleasant.

4.You couldn't find a less expensive hotel. That is a pity.

3.You found your wallet. That is lucky.

2.Her brother invited her to stay. That was very kind of him.

1. Her sisters offered to pay her fare. That was generous of them.

20.It will not be_______ we meet again.

A. long before　　 B. before long　 C. soon after　　 D. shortly after

19.It's the second time you _______ late this week.

A. arrive　　 B. arrived　　 C. have arrived　　 D. had arrived

18.I don't think _____difficult for a Chinese student to master a foreign language within five years

A. that　　 B. it　　 C. too　　 D. very