The little boy who got lost decided to remain ________ she was and wait for her mother.

_______ of volunteers will be needed for 2014 International Horticulture Exposition in Qingdao.—Let’s go and _______ them.

下面的句子中，没有语病的一项是（ ）

We’ll do whatever we can ________ you this term.

Did you go on vacation–No，I stayed at home.