选择：Mother dogs have several babies _____.A.on a time B.at a time C.at times D.for a time

相关推荐

• 求为什么The old man got on the bus,but nobody _____ for himA.made a space B.made spaces C.made space D.made a room13.— I’m afraid I can’t go to the party tomorrow.—_____ you told me you would.[ ]A.And B.But C.Or D.So20.The floor is quite wet,and my teacher told us _____ quickly.[ ]A.to mop up it B.mopped it up C.to mop it up D.mop it up17.—How many babies can a mother giant panda have _____?— One or two.[ ]A.one time B.at a time C.at times D.some time16.T
• 选择：Mother dogs have several babies _____.A.on a time B.at a time C.at times D.for a time
• 选择：Mother dogs have several babies _____.A.on a time B.at a time C.at times D.for a time
• "我的梦想是北京大学"用英语怎么说
• 6*4分之1换成小数等于什么