Scientist are not sure about the ___________ of water on the Mars.
#6679
A
occupation
B
existence
C
demand
D
treasure
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He is an old doctor with a lot of ________. But he has never travelled by air before.Taking a plane was quite ________ experience for him this time.
#5485
A
experience; an
B
experiences; an
C
experience; /
D
experiences; /
The head office of the computer company is in Zhejiang, but it has ______ all over the country.
#6685
A
organizations
B
branches
C
companies
D
businesses
How many _____ would you like?
#6896
A
orange
B
bottle of orange
C
a bottle of orange
D
bottles of orange
It’s really a(n) that Tony, a child of only two, can play the piano so well.
#5761
A
wonder
B
dream
C
preference
D
pleasure