You never know how much difficulty we had the problem. Luckily, we managed to solve it with Ms Zhu’s help.
It took him ____ to find the key to the drawer.
--My brother and I will go to the library tomorrow. --____. Shall we go together?
--Which would you like, tea or coffee? --Either ____ OK, but I prefer coffee ___milk.
--Whose T-shirt is this? --It ____ be John’s. It’s ______ small for him.
Jackie Chan has donated ______ dollars to charity. –He is an example to us all.