问题

The operation room in every hospital has to _______bacteria of any kind so that the patient being operated on doesn’t get infected. [ ]

A: keep free from
B: make it free from
C: to be made free with
D: be kept free from

正确答案是：

同类题型

He is _____ , and today is his _____ birthday.

In many places in China, the old over 90 ______not only by their family but also by the government.

—What are your rules for carry-on luggage, Madam?—You ______ only one piece of luggage on the plane, Sir. [ ]

We had to wait half an hour wehad already booked(预定) a table.

Now children, turn to Page _____ and look at the _____ picture in Unit 1.