问题
The speaker _____ several other subjects in the course of his talk but mostly kept himself to the main topic.
A:held on
B:worked out
C:touched on
D:kept out of
B:worked out
C:touched on
D:kept out of
正确答案是：
同类题型
I want to know you will come back at 8:00 clock tomorrow.
ou going to the footballgame—No, the tickets are ____expensive for me.
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