The defendant couldn’t_____the fact that a large amount of money was found in his house.
____ they are closest friends is not clear though they live together.
A tunnel was built under _____ was a lake a year ago.
—Mary, don’t you believe your sister?—Yes. I believe _____ she says.
Today impressionist paintings are accepted as the beginning of ______ we call “modern art”.
—Sir, can I pass the examinations this time?—That depends on you work hard enough or not. what B. that C. whether D. how