Father _____for London on business upon my arrival, so I didn’t see him.
—I don't understand why you didn't go to the lecture yesterday afternoon. —I'm so sorry.But I________my homework.
If nothing________,the oceans will turn into fish deserts.
“What do you want to be?”asked Mrs.Crawford.“Oh, I________president,”said the boy, with a smile.
—So what is the procedure? —All the applicants ________ before a final decision is made by the authority.
Hurry up! Mark and Carl ________ us.