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 |
At the end of the meeting, it was announced that an agreement _______.
| A．has been reached | B．had been reached |
| C．has reached | D．had reached |
Last Monday, I was asked to give the new students a test ________ their English level.
| A．evaluating | B．to have evaluated |
| C．to evaluate | D．having evaluated |
He was educated at the local high school, _________ he went on to Beijing University.
| A．after which | B．after that |
| C．in which | D．in that |
— Is there anything wrong. Bob? You look sad.
—Oh, nothing much. In fact, I ______ of my friends back home.
| A．have just thought | B．was just thinking |
| C．would just think | D．will just be thinking |
Choosing the right dictionary depends on ______ you want to use it for.
| A．what | B．why | C．how | D．Whether |