—A ruler is 2 dollars and a pen is 3 dollars. How much are they? —They are ________. 
#51074
A
$2
B
$3
C
$4
D
$5
推荐题目
I think __________ should be allowed to drive.
#51761
A
sixteen year old
B
sixteen-year-olds
C
sixteen years old
D
sixteens year old
--Is that Mr. Green? ---No, Mr. Green is an ___________ man. But this man is only about _________.
#51812
A
80-year-old; 18 years old
B
80-years-old;18 years old
C
80-year-old;18-year-old
D
80 years old;18-year-old
—How far is it from the supermarket to your home?—It’s about               .
#51877
A
20-minute drive
B
20-minutes’ drive
C
20 minute’s drive
D
20 minutes’ drive
—How many birds can you see in the trees?—I can see        birds in them.
#51523
A
hundreds of
B
five hundreds
C
hundred of
D
five hundreds of