______ Tom is ill, _______ he goes to school.
________Jim ________ his cousin has been to America,but________ of them know the country well.
The computer requires _________. I think I need _________ to ask Mr. Zhang for help.
The boy _________, and then he _________ after he took the medicine.
---Yellow doesn’t look good on me. I don’t like it. --- _________. I prefer orange.
---Shall we stop for lunch _________ shall we drive on?---Let’s stop for lunch, but the driver can’t drink _________ drive.