Reportedly, yesterday a group of American soldiers were walking along the road in Iraq when a bomb was _______, three of whom were killed.
As we can see, Peter is very happy, so he___________ have passed the exam. After all, it’s not difficult at all.
—Is Bob still a volunteer?—No, but he _____. He worked for the 2008 Beijing Olympic Games.
You’d better _______ because I’m busy writing a letter to my parents.
Last month we students all had some great speeches. The headmaster together with some other teachers __________ to attend it, too.
---Is Johnson on duty today?---It ________ be him, but I’m not sure.