Помогите пожалуйста
Выберите один верный вариант, в соответствии с правилом согласования времен в английском предложении.
1. He asked me if I______English difficult to learn.
a) find c) has found
b) have found d) found
2. The teacher told Sarah _____her exam.
a) not to miss c) not missing
b) do not miss d) did not miss
3. He promised he______there in half an hour.
a) is c) will be
b) would be d) was
4. All the students knew they______revise for the examinations.
a) will c) may
b) must d) had to
5. He showed me which exercises he______.
a) does c) had done
b) has done d) '11 do.