BÀI TẬP TỔNG HỢP VỀ CÁC THÌ TRONG TIẾNG ANH

In all the world, there (be) only 14 mountains that (reach) above 8,000 meters.

He sometimes (come) to see his parents.

When I (come), she (leave) for Dalat ten minutes ago.

My grandfather ...never (fly) in an airplane, and he has no intention of ever doing so.

We ... just (decide) that we (undertake) the job.

He told me that he (take) a trip to California the following week.

I knew that this road (be) too narrow.

Right now I (attend) class. Yesterday at this time I (attend) class.

Tomorrow I’m going to leave for home. When I (arrive) at the airport, Mary (wait) for me.

Margaret was born in 1950. By last year, she (live) on this earth for 55 years .