________ modeling business is by no means easy to get into, the good model is always in demand．

A．While

B．Since

C．As

D．If

They are a boy ________ the age of 10 and a woman ________ long hair．

A．at; with

B．with; has

C．to; with

D．at; has

They picked up the notebook, the pen and the bag and the desk ________ very cheap, too．

A．was

B．were

C．is

D．are

The trees ________ front of the house are ________ the charge of Mr．Li．

A．in; in

B．at; in

C．in; by

D．from; in

The ticket ________ the film is very cheap, so I will go to see the film with my classmates．

A．with

B．to

C．for

D．of

The computer centre, ________ last year, is very popular among the students in these schools．

A．open

B．opening

C．having opened

D．opened

________ can fly．I know about a kind of bird that has no wings．

A．Not all birds

B．No birds

C．All the birds

D．None of the birds

I don’t know who will get the prize, ________．

A．nor do I care

B．nor I care

C．I don’t care

D．don’t I care

They didn’t go to park last month, ________ did I．

A．nor

B．so

C．not

D．such

The scientist gave up the traditional way ________ he did research on insects．

A．in which

B．which

C．what

D．where