We should never ever forget about the war in Iraq and the sufferings(苦难) ______caused to the people there.
The manager says he needs an assistant that he can __________ to deal with the problems that may occur in his absence.
__________ in watching the car passing by that he didn't notice his friends.
In the United States, the black people on the whole __________ ahigh unemployment rate.
I tried my best to make this speech but many listeners __________ laughing as soon as I began.
I quarreled with my sister yesterday, but now I have already __________ with her.