i think it must have been horrible and damp down there中down there是神马意思?

I can't find my wallet .I think I must have d____ it somewhere i like we must m____ plans for it i think you have the w____ number I think it must be的意思 i think people must have foundI think people must have found it quite delight when colour TV was first broadcast in the1920s. 怎么翻译啊? I think she was old.我认为她原来是老的?I don't think she was.She can't have been old.She must have been young.这怎么翻译I think it was cheap.I don't think it was.It can't have been cheap.It must have been expensive.同上.最好将语 I think (it) must be our monitor.为什么填it? i think it must have been horrible and damp down there中down there是神马意思? 英语翻译I think it is clear CIF in intercoms and u must have taken that into consideration or informed me YOU must have missed some word,I think. 1.- I think we don’t have enough time.-I think ____.A.that B.so C.neither D.it1.- I think we don’t have enough time.-I think ____.A.that B.so C.neither D.it 2.I didn’t hear the phone.I ___________ asleep.A.must be B.must have been C.should be D i think he must have been a mechanic,中的must和have been是什么词啊? I think it must ___ very nice on__ I think it must be very nice中文 I think you must ( ) very good in it I think it must __somewhere else.填什么 it is very late I think I must leave now为什么it is very late I think I must leave now为什么要用must I think it must have been in 1967 ____ I visited the Great Lake the first time.A：that B：when C：in which D：where I think it must have been in 1967 ______ I visited the Great Lake the first time.A：when B：which C：where D：that