A. How; at B. What; by C. How; by

【题目】The car accident happened __________ a cold winter morning. Three people were killed in the accident.
A.in
B.on
C.at
D.of

-One is black and the other is white.

A. difference B. surprise C. problem D. danger

A. because of B. because C. if D. but

---My sister ______ medium height, she _______ big eyes.

A. is of; has B. is; is C. of; has

A. an; hard B. a; hard

C. an; hardly D. a; hardly

-Good idea!

A. Why don’t you to eat B. Why not to eat C. Why not eat D. Why don’t

- .

A. Yes,I’d love to B. Yes, I’d love C. No, I’d love D. No, I’d love to

A. be too harmful to

B. be too hard on

C. be too strict in

A. important anything B. anything important

C. important something D. something important