----I’d like to take a week’s holiday.
----______; we are too busy.
| A．Don’t worry | B．Forget it | C．Don’t mention it | D．Pardon me |
By the time he was ten, Edison _________ experiments in chemistry.
| A．had already done | B．already had done |
| C．was already doing | D．already did |
The businessperson wanted to sell his goods fast; ______, he chose his partner with great care.
| A．therefore | B．otherwise |
| C．for | D．however |
Do you know the man____ is talking with Tom?
| A．which | B．who | C．whom | D．whose |
A dictionary is a book ______ gives the meanings of words.
| A．which | B．who | C．whom | D．whose |
The old town has narrow streets and small houses ________ are built close to each other.
| A．they | B．where | C．what | D．that |