2 . Meetings _______ only two languages are used may need only one interpreter.

A．who

B．why

C．where

D．when

3 . If we don’t protect those traditions, there may come a time _______ they disappear.

A．whose

B．which

C．where

D．when

4 . Mr Li is an architect _______ designs for the new town have won praise.

A．that

B．whose

C．who

D．whom

5 . Does anybody know the reason _______ he refused to sign the document?

A．why

B．which

C．who

D．whose

6 . A new library _______ in our school. It will open next year.

A．are building

B．build

C．has built

D．is being built

7 . It is strongly recommended that the machine ______ maintained every year for safety reasons.

A．be

B．will be

C．is

D．has been

8 . From there, you can take a boat to your accommodate and then spend three days ______ (explore) the rainforest with a local guide. (所给词的适当形式填空)

9 . It is because Spain took control of Peru in the 16^th century and ruled until 1821 that Spanish is the main ______(官方的，正式的) language of Peru.(根据汉语提示单词拼写)

10 . She always posts these things, and pictures of exercising, on social ______ (媒体). (根据汉语提示单词拼写)