(天津卷14). As a new graduate, he doesn’t know _______ it takes to start a business here.
—Mike, I can't find my watch anywhere. —You ________ it while working out.
—Where did you get this book? —I picked it up from a secondhand bookshop if you ________ know.
Jack is an outgoing child, usually kind and helpful, but he ________ lose temper sometimes.
________ a little earlier, you could have got a copy of his latest book.
What's your opinion of Mr Li's request that we ________ spend half an hour reading English aloud every morning?