-- I’m sorry we ________ all the educational CD-ROMs. Can you come next week?-- Please call me as soon as the latest one _________.
– A number of students ________ in the dining hall. -- Let me count. The number of the students ________ about 400.
--- I won’t have time to go shopping with you this afternoon. --- But you ______ me yesterday.
Now the water in the river has ____ and we should ____ money to repair the broken bridge.
Yesterday he was walking _____ the police station when a plane flew _____ his head.
As we know, England is ______ European country and Singapore is ____ Asian country.