—Well, you've come back! ________ did you stay in Shanghai? — For about seven days. I really enjoyed myself.

—I don’t know much about computer.—I don’t know,      . Let’s go and ask our computer teacher for help.

Helen needs _____________ candles for her birthday.

. -- Did Kate do best in the final exam?. -- No, but of all the students she did __________.

--How often do you watch TV, Tom? --_______________.