题目

6) If _______ in the fridge, the fruit can remain fresh for more than a week.
A) keeping B) be kept C) kept D) to keep
7) _______, we went swimming in the river.
A) The day being very hot B) It was a very hot day
C) The day was very hot D) Being a very hot day
8) I stayed up all night ________ to find a new solution to the problem.
A) trying B) have tried C) try D) tried
9) ________ with the developed countries, some African countries are left far behind in terms of people’s living standard.
A) Compare B) To compare C) Compared D) Comparing
10) _______ how to deal with the trouble of the computer, Martin had to ask his brother for help.
A) Not know B) Not known C) Not to know D) Not knowing

提问时间：2021-03-04

答案

C A A C D