单项选择题
Many an airplane and many a big gun __________ in the e...
单项选择题Many an airplane and many a big gun __________ in the exhibition．
__________ Plastics, the machine is light in weight. A．...
单项选择题 __________ Plastics, the machine is light in weight.
The advantage of the new bridge will be the way it ____...
单项选择题The advantage of the new bridge will be the way it __________ the towns on the opposite banks of the river.
