Experts believe ______ people can waste less food by shopping only when it is necessary.

(2013·湖南，34)—I don’t understand why you didn’t go to the lecture yesterday afternoon.—I’m so sorry.But I________my homework

Who knows the meaning ofthe saying “ Time __________ will tell” —— __________Tom knows

The number of wild lions in Africa (非洲) _ _ much smaller than before.

27In the west-central region lived the Welsh, who spoke a Celtic language, and in the north lived the Scots, whose language, ______ not the same as Welsh, was also Celtic