.Look!They are swimming __________ the riverA in middleof B in the middle of
问题描述:
.Look!They are swimming __________ the river
A in middleof B in the middle of
答
选A
答
Look! They are swimming __in the middle of ________ the river
答
B
答
in
答
B本文中表示特指the river,所以应该有the