Like some of my classmates,I cannot live up to my teachers’ expectations;________I let them down.
The hospital has a new system to help ______ the best service _______ the patients.
— My money for this month has _____. What shall I do? — I wonder how you ____ your money in two weeks!
I would appreciate it _______ you call back this afternoon for the appointment.
. This tower _______ back to 1860s and it is still in good condition.
You can see the stars on a clear night, but in the daytime they are __________.