David’s father is a doctor Beijing International Hospital.A. in B. at C. on
If __________ bicycle is broken, _________ can use __________.
Mill Li asks Jill _______ look out ______the birds outside.
We are happy_______ you some ideas.
---Tomorrow is my ________ birthday. Would you like to come? ----Sure, I ______ .
Do you need help _______ your Maths homework?