Do you know Zhou Libo, the funny host? He always makes us ________.

Sandy,I called you at 9:00 last night,but nobody answered the phone.-I’m sorry. We ______ a birthday party _______ Jerry.

Success will belong to those ___ never say “impossible”.

My parents are always telling me to leave everything in the study_________.

When the teacher came into the classroom, the students ____ in groups.