Your sister isn't at home. Can you help her_______ her baby?
—Would you like to go shopping with me,Carmen?—I’d love to,________ you don’t want to go alone.A.untilB.beforeC.if
—What did you do yesterday?—I ________ at home and ________ a movie on TV.
—Why do you always look so tired?—Because our teachers ________ us do a lot of homework after school.
Basketball is a kind of ________ sport.You can’t win the match by yourself.
Sometimes she ________ a train to school;sometimes she goes to school ________ bus.