Have you ever been to the museum_________ was built last year? which 。 where。 when。 what。
key 。 they 。 obey 。 grey。
The room ________often cleaned by the students． will be 。 has 。 is。 was。
In need of money，Bob had to take _______ job that was offered to him． whatever 。 no matter what。 whichever。 no matter which。
Jack came to the party_______． without being invited 。 without inviting。 without invited 。 without a invitation。
I don’t know why _______ late for class.
