________he was very tired,he continued working in his office.
--- ____________ my glasses? I can’t read without them.--- I ____________ them on the desk, but they are not there now.
You can only borrow two books ____________ if you don’t have a library card.A. on time B. in time . from time to time D. at a time
--- Have you finished your homework ___________?--- Yes, I have done that ____________.
Can you give me ____________ on how to learn English well? I need your help.
--- Must I return the book this week?--- No, you ____________. You can ____________ it for 20 days.