—Have a break,Amy．You _____________ playing the piano all the morning．
—OK，Mom．I will stop after this piece．
| A．are practicing | B．have practiced |
| C．have been practicing | D．practiced |
Allow children the space to voice their opinions____ they are different from your own.
| A．until | B．as though | C．unless | D．even if |
When the police arrived, the crowd scattered____ all directions.
| A．on | B．in | C．from | D．under |
The weather forecast says heavy rain____ to continue this week in many areas, raising the risk of more flooding.
| A．is expecting | B．was expected |
| C．is expected | D．will be expected |
It turned out that his pulse beats ____ , which made us relieved.
| A．generally | B．usually | C．regularly | D．ordinarily |
When first____ to the market, these products enjoyed great success.
| A．introducing | B．introduced | C．introduce | D．being introduced |