语法词汇练习 语法大全 语法详解 英语听力 
Even a drop of water ______because it is so important to all the living things.
#76903
A
must waste
B
must be wasted
C
mustn’t waste
D
mustn’t be wasted
下一题
推荐题目
(2013·辽宁高考)Harry is feeling uncomfortable.He ________ too much at the party last night.
#62380
A
could drink
B
should drink
C
would have drunk
D
must have drunk
----____ I take the book out? ---- I’m afraid not.
#63653
A
Will
B
Must
C
May
D
Need
— ____ you sing the English song?— Yes, I can.
#74246
A
Can
B
May
C
Must
D
Need
You _________ to eat snacks in the classroom.
#74907
A
shouldn’t
B
had better not
C
oughtn’t
D
needn’t
--            you interrupt now? Can’t you see I’m on the phone? --Sorry sir, but it’s urgent.
#63488
A
Can
B
Should
C
Must
D
Would