They clean the fish tank for ____every week Asometime Bsometimes Csome time Dsome times

Cleaner fish clean the teeth of bigger fish,they swim int the m________of bigger fish, They clean the fish tank for ____every week Asometime Bsometimes Csome time Dsome times jim,_(clean) the fish tank right Are they [ ] [clean] the room. They often watch fish ___ in the fish tank.(swim) Did they clean the room?怎么回答? they prefer__(not clean)the room will they clean the room 改为陈述句 If I keep pets,I L___ to keep fish because they are clean. they keep the streets clean by picking up rubbish _________do they keep the streets clean? 英语首字母填空,Whales eat large a_____ of the plants and animals in very salty sea water.Therefore,whales are very important because they keep the ocean environment clean enough for fish. You must clean the fish tank twice a week.改为祈使句___the fish tank twice a week. Tomorrow is the Spring Festival,They -------(clean)the house now THE FISH 和 FISH you should keep the fish tank clean中keep是什么词性? It is necessary to give the fish clean water的同义句 There ( )some fish in the riverand they are swimming happily -----(do) the mice ----(like) eating fish?No,they -----.怎么填?