he lost his key t----- the door.

he lost his key t----- the door. He can't find his key.He ---------- them.A.must lost B.must have been lost C.must have lost 这这边,having lost the key=lost the key么?句子是这样的：Having lost the key,the boy couldn't enter his house. He lost the key to his bike on his way to the lectures对 the key提问 he lost his k______ .he can't open the door. Tom can't get into the room because he __(lost)the key to the door. He lost his He lost his key It made him（stay） in the cold to wait for his wife‘s return He lost the key ____ the door He is very red with anger when his friend cheats him,but he saysnothing.Yesterday he lost the key to his door.He looked green and felt blue.He found it this morning.He is tickled pink now.1.判断正（T）误（F）Mr.Black is angry when his friend He can't open the door because he ______ his key just now.横线上是填has lost 还是lost?这道题目的答案在参考书上是lost.我思忖着,just now表示刚刚的意思,所以用过去时.但是just now 还是有一个意思是“现在 Mr.Black is a very yellow one.He is very red with anger when his friend cheats him,but he saysnothing.Yesterday he lost the key to his door.He looked green and felt blue.He found it this morning.He is tickled pink now.1.判断正（T）误（F）Mr.B _____,the boy couldn't enter his house.B.The key_____,the boy couldn't enter his house.B.The key been lost D.Having lost the key为什么D不可以? _____,the boy couldn't enter his house.A.Since the key has lostB.The key been lostC.Lost the keyD.Having lost the key答案应该选B?为什么不能选ACD?请说明理由,谢谢~ He lost his temper是什么意思? he can't open the door because his key was______(lose) Jim can't often open the door now because he ___(lose) his key. After he lost his job he could't find any way to make l_____ 单词填空