________ is well-known is that Antarctica is difficult to reach．

A．What

B．It

C．As

D．which

Julie was good at German, French and Russian, all of ________ she spoke fluently．

A．who

B．whom

C．which

D．that

Only when your identity has been checked, ________．

A．you are allowed in

B．you will be allowed in

C．will you allow in

D．will you be allowed in

As she is looking forward to ________ from me, please remember ________ this letter on your way to school．

A．hear; post

B．hearing; to post

C．be heard; posting

D．be hearing; to posting

We slept with the light ________ all night long last night．

A．burnt

B．to burn

C．being burnt

D．burning

It was so dark in the cinema that I could hardly ________ my friend．

A．pick out

B．turn out

C．call out

D．bring out

Peter ________ come with us tonight, but he isn't very sure yet．

A．must

B．may

C．can

D．will

At proper horse races everyone has already studied the form of the horse ________．

A．behind time

B．in progress

C．in advance

D．in time

The city of Auckland is known ________ the City of Sails．

A．for

B．as

C．because

D．due to

The pop singer is talented and elegant．________ is no surprise that she has so many fans around the world．

A．It

B．There

C．That

D．What