试题详情

There is no doubt __________Herbert is the most industrious student in our class.

There is an American boy in our class and the boy can speak good Chinese.

erence in ______ towards what one eats, there is no doubt that people in the west regard the Chines

make sure that there is no blockage in the pipe.

student said in class, “I goed there yesterday”. The teacher responded “say it again, please”. The