Tony hasn't come to the party, because the invitation letter ________ to Toby by mistake.
A.was emailed B.emailed C.is emailed D.emails
The waiter told me that free parking ___________ for the hotel guests.
A.provides B.provided C.will be provided D.was provided
To keep safe, all the drivers in cars________ to wear their seat belts.
A.are supposed B.suppose C.were supposed D.supposed
In schools, students________ to sweep the floor after school.
A.ask B.are asked C.were asked D.will ask
It's a custom in China to have some tea or other drinks before the meal ________.
A.serves B.served C.is served D.will be served
In many schools, all the students ________ to show their student cards when they enter the library.
A.required B.were required C.require D.are required
