用所给动词的适当时态和语态填空.
1.truefriendsalways____(careabout)eachother
2.muchofthecity____(destroy)byfireinthe17thcentury
3.spidersshould____(watchout),becausetheyarepoisonous
4.thehall____(paint)atthemoment,soit____(notlook)itsbest
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