In a courtroom it is sometimes difficult to ______ who is innocent and who is guilty.
---Do you know London at all? ---No, this is the first time that I______ here.
Look at the timetable. The flight to Shanghai _____ off at 10:00.
--- I ____ so busily recently that I ____ no time to help you with your maths. ---That’s OK. I can manage it by myself.
I felt _____ to see her _____ face.
There is ____ Mr. Smith at the door who wants to speak to you.