问题

I used to go camping a lot, so it isn’t the first time I ____in a tent
A:have slept
B:had slept
C:was sleeping
D:slept
B:had slept
C:was sleeping
D:slept
正确答案是:
同类题型
It’s only six o’clock now; Little Tom should be up ,though, because he _____ for nine hours
done, John! Not a single mistake ________ in yourexam paper this time!” said the teacher
.Jack used to work in a garage for a full 10 years, so he fixed the broken engine ______ ease
Wherever he traveled in those days, he always _______ down what he saw and heard.