There are ________ two hundred sheep on this farm.

[　　]

Mr Shute has lived in New York ________.

[　　]

A．for ten years ago

B．since ten years ago

C．for ten years before

D．since ten years before

Joe has worked in the factory ________.

[　　]

A．since three weeks

B．three weeks ago

C．since three week ago

D．for three weeks

We ________ here two days ago. We ________ here for two days.

[　　]

A．have arrived, have been

B．arrived; were

C．arrived, have been

D．have arrived, were

It's time ________ him ________ on duty.

[　　]

The telephone ________ when I ________ a bath.

[　　]

A．rang, had

B．rang, was having

C．was ringing, had

D．was ringing, was having

The earth is ________ the sun.

[　　]

A．as big as 49 times

B．as 49 times as big

C．49 time as big as

D．49 times as big as

You have never traveled on a plane ,________?

[　　]

I ________ I ________ my watch. I can't find it anywhere.

[　　]

A．thought, have lost

B．think , lost

C．think ,have lost

D．don't think , have lost

We ________ her ________ she came back from America.

[　　]

A．saw, until

B．haven't seen, until

C．haven't seen, for

D．have seen, when