【题目】He often ______ cycling on the weekend. ( )

【题目】The Yangtze River starts high in the mountains in the _______ of China. ( )

【题目】Before, I ______ quiet. Now, I ______ very active. ( )

【题目】Please buy _______ pupils some books. ( )

【题目】_______ the morning of March 12th, we usually plant trees. ( )

【题目】_______ bags of corn does a bird need for dinner? ( )

【题目】—Who _______ a bicycle? ( )

【题目】The girl _______ me is tall. I can't see the words on the blackboard. ( )

【题目】—Mum, can I have _______ juice, please? ( )

【题目】—_______ that old lady? ( )