Please don't turn on the TV when people are trying （）
A: studying
B: to have studied
C: to study
D: being studied
A: studying
B: to have studied
C: to study
D: being studied
举一反三
- The silkworm is an insect worth_____. A: to study B: studying C: to be studied D: being studied
- I’m too tired and don’t feel like _____ today. A: to study B: study C: studying D: to be studied
- Paul doesn't have to be made ____. He always works hard. A: study B: to study C: studied D: studying
- Paul doesn't have to be made () . He is always a hard-working student. A: study B: to study C: studied D: studying
- By the end of this year, I _________ English for ten years. A: am studying B: study C: have studied D: studied