—Dad, science is too hard for me.
—Oh, dear, if you keep listening ________ in class and do enough exercises, you’ll find it easy.
A. carelessly B. easily
C. carefully D. quickly
He’ll remember as many English words as he can ______ the exam.
A. passB. not lose
C. passes D. to pass
If you are weak ____ a subject, ______your teacher for advice can help.
A. to, asking B. in, ask
C. to, to ask D. in, asking
—Could I enter the apartment to look for my sister?
—Sorry, you ______. Men _______ go into the apartment for girls.
A. couldn’t; canB. can’t; mustn’t
C. can; can D. needn’t; mustn’t
The students _______ their homework carefully when the teacher walked into the classroom quietly.
A. doB. did
C. are doing D. were doing
—Look! The boy is just wearing a shirt in cold winter.
—How poor! It’s said that his parents _____ since he was 3 years old. Maybe we should give him a hand.
A. have been deadB. have died
C. died D. die
