1.watching
2.Becausethey can hear and watch at the same time.But they can't see anything over the radio.
3.No,they don't.或No.
4.他们总是忙于他们的功课
5.A
(2-4答案不唯一)
1.watching
2.Becausethey can hear and watch at the same time.But they can't see anything over the radio.
3.No,they don't.或No.
4.他们总是忙于他们的功课
5.A
(2-4答案不唯一)