—Haven’t you handed in your composition yet?
—Yes. I _______ on it for twenty five minutes.
A.will work B.am working C.would work D.worked
Fortune China released a ranking of business leaders in 2020, Jack Ma, founder of Alibaba, _______ the list with outstanding leadership.
A.topping B.topped C.to top D.having topped
A painting by Vincent Van Gogh was stolen on _______ would have been the Dutch master’s 167th birthday.
A.that B.when C.what D.which
—Who is China’s first UFC champion?
—It is Zhang Weili _______ opponent, Jessica Andrade, was knocked out by her within just 42 seconds.
A.who B.whom C.that D.whose
The government calls on us to avoid visiting crowded areas and medical institutions _______ it is necessary.
A.while B.because C.unless D.when
听下面一段独白，回答以下小题。
1.Who are the listeners?
A.Parents. B.Students. C.Teachers.
2.Where is the speaker?
A.In the school hall. B.In the student health center. C.In the international student office.
3.How can the listeners get the information about the procedures?
A.From the speaker. B.From a doctor. C.From a handbook.
4.What does the speaker suggest the listeners do in the end?
A.Get some travel medicine.
B.Offer their medical history to the doctor.
C.Make an early appointment with the specialist.
