Natural disasters are happening more frequently than before; the whole world should work together to respond.
I did not accept any of the many offerings,because I found ________ satisfactory.
—Do you often talk with your friends on the telephone or mobile phone?—________.I like using QQ.
To save class time,our teacher has ________ students do half of the exercise in class and complete the other half for our homework.
My grandma still treats me like a child.She can’t imagine ________ grown up.
I just pretended nobody was at home,so I didn’t ask who ________ was.