He seems too tired today, and I wonder he got a good sleep last night.
16. He made another wonderful discovery, __________ of great importance to science.
15. Great changes ______ in the city, and a lot of new buildings ______.
14. I thought she ______ like something to eat, so I have bought two pieces of bread.
13. Recently I bought a house, _______ was very reasonable.
12. The little boy walks ____ he _____ an old man. A. as if, likes B. as though, were c. even if, likes D. even though, were