【推荐1】Only when he reached the tea house __________ he’d been in it last year.

A．he realized

B．did he realize

C．he realize

D．do he realize

【推荐3】A good listener takes part in the conversation, ________ ideas and raising questions to keep the talk flowing.

A．realizing	B．copying
C．offering	D．misunderstanding

【推荐1】After walking on the zigzag path to the mountain top for a few hours, the tourists gathered under trees ________ shade and ________ down to have a rest.

A．provided; sit	B．providing; sitting
C．providing; sat	D．provided; sat

【推荐2】— Look at the sign “No smoking”.
— Sorry, I ________know it. I ________ do it again.

A．don’t, don’t	B．don’t, won’t
C．didn’t, don’t	D．didn’t, won’t

【推荐1】So seriously _____ in the accident that he was sent to hospital at once.

A．he was wounded	B．was he hurt
C．he did injure	D．did he hurt

【推荐2】So sudden ________that the enemy had no time to escape.

A．did the attack	B．the attack did
C．was the attack	D．the attack was