Well, you’ve come back! ________ did you stay in Shanghai?— For about seven days. I really enjoyed myself.
_______ drive too fast. There are too many people.
Ling lingcametoschool _7 :30 this morning.[ ]
I find _______ difficult to finish the work on time. We only have three hours left.
I found there was only one copy of “Bighead Son and Small-head Father” on the bookshelf, so I decided to buy _______ at once.