Helen looked tired ______ she stayed up all night preparing for today’s exam.
A: because
B: if
C: unless
D: when
A: because
B: if
C: unless
D: when
举一反三
- —Another cup of coffee？That's your third since lunch. —Yeah，well，I___all night preparing for my history exam. I can hardly keep my eyes open. A: stayed up B: have stayed up C: have been staying up D: will stay up
- I looked up to Helen because she was doing ____(关系词) she loved----serving people----and nobody ____(do) it better.
- -Another cup of coffee? That's your third since lunch.[br][/br]-Yeah, well, I___all night preparing for my history exam. I can hardly keep my eyes open. A: stayed up B: have stayed up C: have been staying up D: will stay up
- M：Linda looked very tired these days．W：She looked OK to me（↗）．Q：What does the woman think of Linda？ A: She saw Linda and me． B: Linda said she was fine． C: She looked up the word for me． D: She considered Linda was all right．
- Helen always keeps her smartphone switched off ________ she’s expecting a call. ( ). A: once B: since C: unless D: when