Lola ________ a piece of waste paper and put it into the rubbish bag．

A．looked for

B．picked up

C．threw away

Liu Mei has ________ apartment．It's comfortable to live in．

A．a

B．an

C．the

It's necessary ________ us to reduce the use of plastic bags in order to protect the environment．

A．for

B．to

C．of

________ students in our school contributed(捐赠)money to the people in the earthquake area．

A．Thousands of

B．Thousands

C．Thousand

The museum is quite far．It will take you half ________ hour to go there by bus．

A．the

B．a

C．an

The camel ________ I rode had a bad temper, and I got tired．

A．that

B．whose

C．who

D．where

________ they arrived early at the airport, they never missed the flight．

A．If

B．because

C．As soon as

D．although

The Chiang Jiang river is about 6300 kilometers ________．

A．long

B．tall

C．wide

D．high

The also wrote ________ of beautiful pieces of music for the orchestra．

A．hundred

B．six hundred

C．a hundred

D．hundreds

The telephone ________ by Alexander Graham Bell in 1876．

A．was invented

B．has been invented

C．is invented

D．will be invented