We tried ________ the window, but it was still hot in the room.
| A．to open | B．opening | C．open | D．opened |
Mr. Baker thinks his own inconvenience and _________ of his fellow colleagues are the only thing that the government should deal with.
| A．whoever | B．someone | C．that | D．any |
My uncle’s house in the downtown area is much smaller than ours , but it is twice _______ expensive .
| A．as | B．so | C．too | D．very |
He didn’t make ________ clear when and where the meeting would be held.
| A．this | B．that | C．it | D．these |
Being a parent is not always easy, and being the parent of a child with special needs often carries with ___ extra stress.
| A．it | B．them | C．one | D．him |
Jane was asked a lot of questions, but she didn’t answer_____ of them.
| A．other | B．any | C．none | D．some |