A recent research shows that there _____ volcanic activities on the moon and Mars. However, they no longer exist now.
A.had been | B.has been | C.were | D.would be |
—Hello!I want to book a double room.
—Sorry.There is no double room ________.
A.suitable | B.available |
C.comfortable | D.cheap |
The young man comes from a(n) ________ family,who owns several companies in London and Paris.
A.energetic | B.intelligent | C.anxious | D.wealthy |
—What was it that caused the party to be put off?
—________ the invitations.
A.Because Tom delayed sending |
B.Tom delayed to send |
C.That Tom delayed sending |
D.Tom delayed sending |
The new technology,if ________ to farming,will help increase the grain output.
A.applying | B.to apply |
C.applied | D.having applied |
________ this way can we smooth the difficulty we are faced with now.
A.Just in | B.After in | C.Just by | D.Only in |