问题

For the past two years I ________ to help my two brothers
A:struggled
B:have struggled
C:had struggled
D:am struggling
B:have struggled
C:had struggled
D:am struggling
正确答案是:
同类题型
Rolls-Royces is rhave two and now they are buyingthird.
______ with what I said, mother agreed that I could go swimming with my classmates.
Up to now, the program ______ thousands of children who would otherwise have died
_______ only one week left before the final examination, we’re kept busy going over our lessons.
The minute he heard someone shouting for help, out_______ to see what was happening.