Question

They have () to China many time,They know a lot about China(要理由)

They have () to China many time,They know a lot about China A.come B.came C.go D.went

Answer 1

为你解答。
They
have
(A.come)
to
China
many
time.
They
know
a
lot
about
China.
他们已经来过中国多次了。他们对中国很了解。
解释:前句的时态是现在完成时，结构是助动词have加上动词的过去分词组成，表示到现在已经做过了。come的过去分词写法是不规则的，和原形写法一样。