The teacher came in, ______ a smile ______ his face.
The bell rang ______ all the students went out of the classroom.
“ Tom, help ______ to some fish.” My mother said.
. Peter drives ______ Amy, so it will take Peter _______ time to get to the hotel.
Yesterday Kitty’s teacher Mr Wu invited me ______ their school trip to the World Park.
---English isn’t as _______ as Chinese.---Maybe, perhaps it’s just because Chinese is your native language(母语).