【2013湖南益阳】When he saw a wallet on the ground, he ______at once. A. picked it up B. gave it up C. picked up it
If they ________time, they__________the new factory tomorrow.
What are the students ________?
—What’s your mother? — __________________.
A _______ schoolboy, Li Lida, first tried to cross the Qiongzhou Channel in June,2000.
He went to the factory_______ check the progress of the work.