891.I _____ all the cookiiig for my family,but recently I've been too busy to do it.
A.will do
B.do
C.am doing
D.had done
892.Linda makes sure the tables ____ before the guests arrive.
A.be set
B.set
C.are set
D.are setting
891.答案是B;
此句表示经常性习供性动作.故用一般现在时态。
892.答案是C;
set a table摆放桌子;make sure后一般接宾语从句。