用gather, all together与altogether填空。

①There are 50 computers in the computer lab_________.

②The new building is not ___________ finished.

③__________,we think her hurried marriage is wrong.

④Put the plates _________ in the sink.

⑤The audience stood up_________

⑥Dark clouds were_________ ,indicating that a storm was on the way here.

柴油机的供油系统和进气系统必须在_____匹配恰当才能获得良好的性能指标。