I don’t think___possible to master a foreign language without much memory work
Mr.Smith was very glad _____ as the manager of the company.
---Have you received Jack’s plan? ---Yes, but I don’t think his plan is _____.
______ history of the Qing Dynasty is _____ history of suffering, also one of being bullied and invaded(欺侮和侵略).
Modern equipment and no smoking are two of the things I like ______ working here. But whether to stay or leave is ___________.
—Where have you been? — I ______ in the heavy traffic. Otherwise I ______ here earlier.