My mother ________ the floor when I did my homework last night.
A.is sweeping B.was sweeping C.sweeping D.has swept
The environment in my hometown is improving because many trees ________ every year.
A.plant B.planted C.are planted D.were planted
The old man leads a simple life, ________ he has a lot of wealth.
A.although B.when C.unless D.because
I could____control my feelings at the moment. The movie reminds me of my childhood.
A.really B.nearly C.slowly D.hardly
I haven’t ________ my little sister. I don’t know whether she is OK or not.
A.come from B.thought of C.heard of D.heard from
This restaurant provides customers with best ________. There is no doubt that people like to come here.
A.behavior B.attention C.service D.exercise