I couldn't take any more clothes ________ there wasn't any space in my suitcase．

A．though

B．as

C．where

D．if

With the development of the Internet ________ communication is done by regular mail．

A．much

B．more

C．none

D．less

Our previous school building, ________ also like an “E”, was made of brick and concrete, and it was built in 1981．

A．being shaped

B．to be shaped

C．shaping

D．shaped

If the paper to be handed in next week ________ , the teacher will hold a parent meeting．

A．is delayed

B．will be delayed

C．is being delayed

D．delayed

________ the website of the Fire Department in your city, and you will learn a lot about firefighting．

A．Having searched

B．To search

C．Searching

D．Search

Large quantities of black tea in this area ________ to foreign countries since the 20^th century．

A．has exported

B．has been exported

C．were exported

D．have been exported

Between the two buildings ________ a tall pine tree, which is about two hundred years old．

A．has

B．is

C．have

D．are

________ wants to speak to me on the phone, tell them I'm busy．I don't wish to be disturbed in my work．

A．Who

B．Whoever

C．Anyone

D．Anyone who

The key, as we know, ________ the unemployment problem is ________ more job opportunities．

A．to solving, create

B．to solving, to create

C．to solve, creating

D．to solve, to create

I enjoy walking along the river with trees ________ pleasant shade during summer．

A．to provide

B．provided

C．providing

D．having provided