— Hi! John, would you like to play football with us?
— Oh，I can’t. I ___ my lesson all the morning and still need half an hour.
| A．am reviewing | B．have been reviewing |
| C．have reviewed | D．reviewed |
相关试题
.(北京卷21). at my classmates' faces, I read the same excitement in their eyes.
| A．Looking | B．Look | C．To look | D．Looked |
.（北京卷25）. I'm calling to enquire about the position in yesterday's China Daily.
| A．advertised | B．to be advertise d |
C．advertising | D．having advertised |
. In April, thousands of holidaymakers remained abroad due to the volcanic ash cloud.
:
| A．sticking | B．stuck | C．to be stuck | D．to have stuck |
.Lots of rescue workers were working around the clock ,supplies to Yushu, Oinghai province after the earthquake.
| A．sending | B．to send | C．having sent | D．to have sent |
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