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【简答题】
炔烃的官能团是
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举一反三
【单选题】The meeting has been on for five hours and the plan of our activity is still____. [ ]
A.
uncertain
B.
known
C.
certain
D.
sure
【单选题】— The plan I put forward at the meeting has been _____. — That's great. [ ]
A.
approved
B.
mastered
C.
absorbed
D.
rejected
【单选题】The meeting has been postponed till next Friday.
A.
called off
B.
taken off
C.
put off
D.
pulled off
【简答题】The meeting has been called .
【简答题】The meeting has been put for a week.
【单选题】The date of the meeting has been from Friday to Monday.
A.
polluted
B.
owned
C.
mined
D.
advanced
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