Helen told me that she had some problems _______ his English learning.

— Are the food and clothes_________ the quake-hit area? — Yes, they will be flown there ahead of time. [ ]

Mr Zhang gave the textbooks to all the people _____ those who had already taken them[ ]

The part he ______ in the film was popular with the audience.

Tom was disappointed that most of the guests ______ when he ______ at the party.