Only by shouting at the top of his voice__________. .
| A．he was able to make himself hear | B．he was able to make himself heard |
| C．was he able to make himself hear | D．was he able to make himself heard |
The shopkeeper did not want to sell for ________ he thought was not enough.
| A．where | B．how | C．what | D．Which |
Danby left word with my secretary ________ he would call again in the afternoon.
| A．who | B．that | C．as | D．which |
Do you have any ideas ________ is actually going on in the classroom?
| A．that | B．what | C．as | D．Which |
Elephants have their own way to tell the shape of an object and ________ it is rough or smooth.
| A．不填 | B．whether | C．how | D．Which |
I was surprised by her words, which made me recognize ________ silly mistakes I had made.
| A．what | B．that | C．how | D．which |