Don't worry, sir. I'm sure I can run to catch up with them.A. slowly enough B enough slowlyC. fast enough D. enough fast
—Have you ever been to the Great Wall? — ____________.
Do you think maths is ____________foreign languages?
—Do you know ____________she came to Beijing? —Yes. She came by plane.
Peter didn’t go to Mary’s birthday party because he was _____________then.
Jack bought a ____________in a shoe shop yesterday.