问题

technique ____, the production as awhole increased by % percent last year

A:had done
B:would do
C:was doing
D:did

正确答案是：

同类题型

(2009浙江宁波质检)One of the best ways for people to keep fit is to _______ healthy eating habits．

He is the only person who saw the accident ______. So he is the most important witness.[ ]

When you are going upstairs, please_____ your head.

Where can I put my shoes— You can ________ under the bed.

下列各句中，没有语病的一句是（）