1、题目13:John is getting very thin.He doesn＇t eat () food.

A. 0

B. 1

C. 2

D. 3

A. 　planted

B. 　plants

C. 　will plant

D. 　is planting

A. 　3∈M

B. 　1∈M

C. 　4∈M

D. 　-1∉M

A. 　π

B. 　2π

C. 　3π

D. 　4π

A. 14

B. 21

C. 28

D. 35

A. 　putting off

B. 　putting on

C. 　putting down

D. 　putting away

A. 　a

B. 　an

C. 　the

D. 　/

A. 　How often

B. 　How long

C. 　How many

D. 　How much

A. 　was traveling

B. 　is traveling

C. 　traveled

D. 　travels

A. 　may

B. 　must

C. 　will

D. 　can