Such poets as Shakespeare __________ widely read, of whose works, however, some __________ difficult to understand.
| A．are; are | B．is; is |
| C．are; is | D．is; are |
A new technique ____ out, the yields increased by 20% .
| A．having working | B．having been working |
| C．has worked | D．had been worked |
There are many inconveniences that have to be ____ when you are camping.
| A．put up with | B．put up | C．put off | D．put away |
The size of the audience, ____ we had expected, was well over one thousand.
| A．whom | B．who | C．as | D．which |
Very few experts have ____ with complete new answers to the world s economic problems.
| A．come down | B．come around | C．come up | D．come to |
A table made of steel costs more than ____ made of wood.
| A．that | B．which | C．one | D．it |