A. for
B. in
C. to
D. from
They left three hours ago; they ______ there by now.A. must arriveB. can arriveC
It took the firemen three hours to_______ the fire.A. put downB. put upC. put ou
[单选题]B．Spending two or three hours playing outdoors each day can reduce a child’s chance of becoming short-sighted, a research shows. It challenges (挑战) the belief that short- sightedness is caused by computer use, watching TV or reading in weak light.The
[单选题]First two hours, now three hours—this is how far in advance authorities are
[单选题]First two hours, now three hours—this is how far in advance authorities are
[单选题]First two hours, now three hours—this is how far in advance authorities are
[单选题]First two hours, now three hours—this is how far in advance authorities are
[单选题]First two hours, now three hours—this is how far in advance authorities are
[单选题]It saved them an hour during a procedure that would normally take three hou
[单选题]The teacher's lecture on pronunciation lasted for three hours. Many of us f