— Has Tom finished writing his essay today? — I have no idea. He ______ it this morning.
— Has Yang Liping returned from Yunnan yet? I’d like to meet her.— Sorry. She ____ back here only for last weekend.
In 1948, three American scientists invented ____ transistor, which is ____ small electronic device to control an electric current.
I don’t understand why the boss should __________ the girl, because in my opinion, it was her fault that caused the loss.
Our team _______ five persons.
He _______ gas a mile from home.