After a short rest, the soldiers keep on _________ till midnight.
Bob is young, _______ he knows a lot.
When we came to the gate, he stopped _______ me go in first.
---Have you read this book?---Yes.I _______ it two weeks ago.
---Would you like some coffee? ---Yes, and please get me some milk. I prefer coffee _______ milk.
She is very good at painting. She can paint _______ her teacher.