Let's ask him ()help.括号中填什么介词

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• 1.Today the forests have almost gone.People must (be stopped from cutting) down too many trees.括号中为什么不能填be stopped to cut?2.You'd better give up smoking,(or) you will get ill.括号中为什么不能用and?3.-Linda,I am very thirsty.-Let's go to the nearest supermarket (to buy) some drink,OK?为什么括号中要用不定式?用buy不行吗?
• It is no good ( ) to come now.He is busy.括号中要填什么?有四个选项的A if you ask him B to ask him C asking him Dthat you ask him
• So people often s( ) there and ask him.括号里填什么?
• So people often s( ) there and ask him.括号里填什么?
• Let's ask him ()help.括号中填什么介词
• We don’t know 【whether to do】 in next.let’s go and ask Mr Li.括号中为什么填whether to do?而不是what to do?
• be popular to/with/by/for他们的用法区别是什么?求讲的详细易懂些.peter's good manners make him very popular ()his schoolmates;i don't think you can work out the chemistry problem()his help,括号中应填with without,unless,求讲解
• Let's ask him ()help.括号中填什么介词
• -Are you() with this new machine - Sorry,I do not know it well.Let's ask Mr wu for some help.空格里填什么啊
• Tom can also play it very well.Let's go and ask ( )to play with us.括号里填什么
• 用一副三角尺画角,不能画出的角的度数是()15度,75度,145度,165度
• 函数y=x^2-2ax+a的值域为[0,+∞),则实数a的取值集合为