— Oh! Must you? Stay a bit longer, please. — , but I've got an early start tomorrow.
_______by the teacher, Bob has made great progress this term.
I firmly believe, as long as I great efforts, my dream will come true sooner or later.
Peter will give me five sweets an apple, but in fact I don’t have a sweet tooth.
— The traffic is too heavy. Would you like me to help you the street? — That’s very kind of you.
Scientists _______ a lot of experiments on animals, hoping to find and effective way to cure the patients who had AIDS.