---It’s a lovely day, isn’t it?---Yes. I love _____ when the weather is like this. Why don’t we sit outside and have our lunch?
The garden looks more beautiful ____ a lot of flowers coming out.
I’m afraid this is the best way ____we can think of ____you.
All the universities have duty to _______ their students ____of the quick development of the scientific world.
I _______ spend the Saturday afternoon with my old friends in the zoo, but they did not come.
Reading books is very important for developing the students’ understanding of the world, ____?