you must be ___!(kid)

you must be ___!(kid) You must be —(kid).There is no person in the house. You must be kidding.You must be kidding me.1、两种说法哪个对 2、kid可以换成joke吗 you must be _____(kid).There is no person in the house用适当的形式填空 you must be joking改为同义句 you ___ ___ ___! You must ___(be) careful____(红绿灯处） You must ___(be) careful (在红绿灯处） You must be kidding 时态?是现在进行时态吗?2.kid 是不是,可以做及物,也可做不及物,如Are you kidding me? Life must have been difficult when you were a kid.句子分析从句when you were a kid是个明显表示过去的从句,那么主句为什么用现在完成时“have been ...”呢?为什么不说：Life must be difficult when you were a kid. You must be careful with your handwriting.(改为祈使句）___ ___ with your handwriting. We must ___(be) careful. You must be strong . you must be You must be hungry You must be joking You must be confident. You must be dreaming you must be careful