—Who did English homework better, Leo or Nick?—Leo is more careful. I think Leo did _____ Nick.
Which sign tells us it is important to plant more trees?
— Can you stay here longer?—_______.But I have to prepare for my exam.
______people came to Baotu Spring during May 1st
We must work hard. There _______an important exam in June.
My brother is as as me. We both like telling jokes.