现在的家庭结构一般为( )①主干家庭 ②单亲家庭 ③核心家庭 ④联合家庭
Betty and her classmates are going to _______ a school magazine, and the magazine __________ New Standard.
You may go fishing if your work _____________.
If anything ___________ to him, please call me as soon as possible.
Study hard, ______ you’ll pass the exam.
John has been in hospital for months, and he isn’t getting _________ better.