25. – Tom, it's too late. Our son ________ be back.
– Don't be anxious. I dare say he ________ have some extra work to do.
| A．can; must | B．will; might | C．should; must | D．must; may |
A spokesman said, “______ it is rainy, Prince William and Kate will appear on the palace balcony at 1:25 pm for their longawaited kiss.”
| A．What | B．Whether | C．However | D．No matter how |
______ was most shocking about the tornadoes in America was that they threatened six states and killed more than 100 persons.
| A．That | B．Which | C．Why | D．What |
The disappearance of dinosaurs made _______ the evolution and dominance of mammals on the earth.
| A．it was possible | B．it possible | C．possible to be | D．possible |
I felt most angry about the way ______ I was treated when I was shopping.
| A．when | B．that | C．which | D．where |
Regarding China-US differences on human rights issues, Hong said the two sides can enhance mutual understanding through dialogue ______ on equality and mutual respect.
| A．based | B．to base | C．basing | D．base |