______ Tom studied very hard, he didn't do well on the exam.
A: As
B: Because
C: Since
D: Though
A: As
B: Because
C: Since
D: Though
举一反三
- Tom studied very hard he passed the exam.（汤姆努力学习，结果通过了考试） A: so that B: because
- Tom didn' t pass the maths exam ______ his carelessness. A: because B: since C: as D: because of
- I didn't do very well in the exam. Unluckily, he did it ___. A: worse B: badly C: worst
- I didn’t do very well in this exam. Unluckily, he did it _______. A: worse B: badly C: better D: worst
- ________, Malcolm X would not have been able to join the world community of thoughts and actions. A: . If he didn’t study English very hard through self-learning B: . Were he to study English very hard through self-learning C: . Had he didn’t study English very hard through self-learning D: . Hadn’t he studied English very hard through self-learning