____ quiet, for, you see, the baby is sleeping![ ]

There are so many kinds of pens in the shop ,I can’tdecide ______.

didn’t Tom go to the concert last night — I have no idea, but I think he _____ in his study.

If you go to Beijing, don’t forget to buy some Qingfeng Baozi for me. – . I also want to try the famous baozi.

of the good results of the exam, the teacherfelt very happy.