题目内容
单句改错
There is no doubt if we should study hard.
____________________
There is a disappointing expression on his face, which shows he is not satisfied with the result.
There are much more books than you expected now.
_____________________________
There was a worrying expression on his face.
There is no doubt whether John will come on time.
There are an increasing number of cars on the roads and a number rose by 20%last year.________