It (a)   choosing the right footwear is also essential. (không có gì phải bàn cãi rằng)

We were not (a)   leave before we finished the essay. (được phép rời đi)

(a)   that running 42 kilometers is a great achievement. (Không có gì nghi ngờ rằng)

Dean has been (a)   for over two months now. (thất nghiệp)

She became a full-time (a)   last year. (nhân viên/thành viên trong đội ngũ nhân viên)

It is said that the Minister of Education is going to (a)   . (từ chức)

The union I am a member of (a)   a nationwide strike this week. (đang kêu gọi)

In some professions, you have to (a)   when you are 60 years old. (nghỉ hưu)

The secretary (a)   for ages. (bắt tôi phải đợi, past simple)

Humans aren’t (a)   sharks as food. (hấp dẫn đối với)

Experts strongly recommend that you should (a)   long distances gradually. (quen với việc chạy)

Don’t make the mistake of eating too little before the race, or you will rapidly run (a)   . (cạn kiệt năng lượng)

The chairman of the committee is believed to (a)   the scandal. (có dính líu tới)

I put a lot (a)   writing this report. (bỏ nhiều công sức vào đâu)