Listen!Davidistalkinghappilywi

--- Listen! David is talking happily with his mother in the next room.
　--- It ______ be his mother. She has gone to Yunnan to be a volunteer doctor.

A．should

B．must

C．can’t

D．mustn’t

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Mr John’s car hit a tree and he was trapped in the car．What telephone number shouldhe call for help?

A．110

B．119

C．120

D．122

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A．to offer	B．to look
C．to find	D．to watch

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— Me , too．My mouth was watering _____ I was watching the TV program A Bite of China．

A．while

B．when

C．before

D．after

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“ Farmers harvest crops．” The structure of this sentence is____________．

A．S+V

B．S+V+P

C．S+V+O

D．S+V+IO+DO

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______, pandas may not have a place to live or food to eat．

A．At last	B．As a result
C．In fact	D．At first

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