To battle world hunger, the great scientist once traveled to many places where populations _______ faster than crop production at that time.
| A．expanded | B．were expanding |
| C．has expanded | D．would expand |
The role that women have been ________ in human history is of great importance.
| A．coming | B．doing | C．playing | D．making |
Tsinghua University, in 1911, is home to a great number of outstanding figures.
| A．found | B．founding |
| C．founded | D．to be founded |
Tony lent me the money, that I’d do as much for him.
| A．hoping | B．to hope |
| C．hoped | D．having hoped |
—Happy birthday!
—Thank you! It’s the best present Ifor.
| A．should have wished | B．must have wished |
| C．may have wished | D．could have wished |
People built a bridge over the riverthose who died in the floods while saving others.
| A．in need of | B．in memory of |
| C．in charge of | D．in praise of |