_______unemployment and crime are high, it can be assumed that the latter is due to the former.
| A．Before | B．Where | C．Unless | D．Until |
Some researchers believe that there is no doubt ________ a cure for AIDS will be found.
| A．which | B．that | C．what | D．whether |
Mum is coming. What present _______ for your birthday?
| A．you expect she has got | B．you expect has she got |
| C．do you expect she has got | D．do you expect has she got |
Danny left word with my secretary _______ he would call again in the afternoon.
| A．who | B．that | C．as | D．which |
Elephants have their own way to tell the shape of an object and _______ it is rough or smooth.
| A．/ | B．whether | C．how | D．what |
—Why does she always ask you for help?
—There is no one else _______, is there?
| A．who to turn to | B．she can turn to |
| C．for whom to turn | D．for her to turn |