If he ( ) the problem well, he couldn't have solved it. A: has not studied B: shouldn't have studied C: had not studied D: were not to study

I had studied a lot, ________ I did really well on the test.

They are well ______ with each other since they once studied in the same university. A: identified B: recognized C: acknowledged D: acquainted

They are well ______ with each other since they once studied in the same university A: informed B: accustomed C: acknowledged D: acquainted

I should have studied last night, but I went to the movies____. A: as well B: instead C: as a result D: likewise

______ Tom studied very hard, he didn't do well on the exam. A: As B: Because C: Since D: Though

---We will do what we can ____English well this term.---It's high time for you to work hard. A: to study B: study C: be studied

Michael studied hard before the examination in mathematics, and it ______ . He made an A: paid out B: paid off C: paid over D: paid well

I _______ in Shanghai last term. But now I ______ in Beijing. A: study, studied B: studied, studied C: studied, study D: studied, studies

By the end of last term we ___ English for two years. A: have studied B: have been studied C: would studied D: had studied