单项选择题
—Hi, Tracy, you look tired. —I am tired. I () the living-room all day.
A．painted B．have been painting C．had painted D．have painted
单项选择题 —Mr. Li, you have won half a million yuan, (). —Thank you.
单项选择题 You should take the medicine after you read the ().
单项选择题 "Please () why you're so late", said his girlfriend.
