There is(one) radio in the living room.客厅里有台收音机.提问：How many radios are there in the living room?（客厅里面有几台收音机?）There library is( behind the police station).图书馆在警察局的后面.提...Baby koala bears are( only2 centimeters tall).They can( jump and swim).You can check out( three).peter (does his homework( with mary. 对不起忘了括号 再帮一下谢谢对括号里进行的提问Baby koala bears are( only2 centimeters tall).How tall are the baby koala bears?（考拉熊宝宝有多高？）They can( jump and swim).What can they do?（它们能干吗？）You can check out( three).（这里你打错单词了吧，there不是three）Where can I check out?（我能在哪里核实一下呢？）peter (does his homework( with mary. Whom does Peter do his home work with?（皮特和谁一起做家庭作业？）Who does the homwork with Peter?（谁和皮特一起做家庭作业？）不过，第一句要好些~