單項選擇題This maths problem is easy（）

A.work out 
B.to be working out
C.worked
D.to work out


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1.單項選擇題This kind of material expands（）the temperature increasing.

A.to
B.for
C.with 
D.at

2.單項選擇題This is the student（）I know will pass the TOEFL test.

A.who
B.whom
C.whose  
D.what

3.單項選擇題This is Mr. Green and this is Mr. Brown.（）

A.How do you do
B.How are you
C.Fine, thank you
D.Hi, how are you getting on

4.單項選擇題This is John.（）

A.Oh, I have never seen you. 
B.Yes, I am glad.
C.Hello, John. Nice to meet you.
D.How are you?

5.單項選擇題This box is too heavy for me to carry it upstairs.（）

A.You may ask for help. 
B.I'll give you a hand. 
C.Please do me a favor. 
D.I'd come to help.