阿摩線上測驗
77. Since 2009, there _____ many attempts to establish an international readability index, but until now no one has managed to
shove the issue.
(A) are
(B) have
(C) have been
(D) have made
答案：登入後查看
統計： A(143), B(51), C(790), D(168), E(0) #2369135
統計： A(143), B(51), C(790), D(168), E(0) #2369135
詳解 (共 6 筆)
chiao
#5391706
4
2
jade0727
#5517226
請問為何不能用have made many attempts ....語意 “已做出很多嘗..."
2
0
