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Read the pairs of sentences. Only one sentence in each pair is correct. Choose the correct sentences.

A. As the traffic lights turned red, the cars stopped.

B. As the cars stopped, the traffic lights turned red.

Read the pairs of sentences. Only one sentence in each pair is correct. Choose the correct sentences.

A. The sun was rising while the birds started to sing.

B. The birds started to sing while the sun was rising.

Read the pairs of sentences. Only one sentence in each pair is correct. Choose the correct sentences. 

A. As she closed the door, the phone rang.

B. While she closed the door, the phone rang.

Read the pairs of sentences. Only one sentence in each pair is correct. Choose the correct sentences.

A. David arrived home while Amy was sleeping.

B. Amy was sleeping while David arrived home.

Read the pairs of sentences. Only one sentence in each pair is correct. Choose the correct sentences. 

A. They arrived at the concert while the singer started the first song.

B. They arrived at the concert as the singer started the first song.

Frank wrote down some teenage problems, but he missed some words. Help him complete the sentences.

一些男孩子因为体育活动太多而导致学习不理想。

Some boys do sports ________ much ________ study well.

Choose the object complement in the following sentence

He considers the performance a great success.

A　　  B　　　　　　 C　　　　　　   D

Choose the object complement in the following sentence

All work and no play makes Jack a dull boy.

　　　　 A　　　　　　 B　　 C　　   D

Choose the object complement in the following sentence

He painted the walls light blue.

A    B　　    C　　　　   D