Mrs.White couldn’t present at the meeting this afternoon because she （) the flu.A.obt

He bought a photocopier ______.

A．by accident

B．because he couldn't find a place to make a photocopy

C．because there was no place nearby to provide the photocopy service

D．because all sorts of people need it

A.teaches

B.taught

C.has taught

D.had taught

She couldn't help ______ (do)the housework, for she was busy．

A.but then

B.rather

C.on the other side

D.however

A.wouldn't

B.would

C.couldn't

A good tour guide tells visitors().

A. What they couldn't miss during the trip

B. What during the trip they couldn't miss

C. What couldn't miss they during the trip

A. No, she couldn’t

B. No, she could

C. Yes, she couldn’t

D. Yes, she answers