Jack likes to sit ________ the back of the bus.
A．in B．on C．at D．of
---- What are you doing? ---- I’m ________ my English book.
A．looking after B．looking at C．looking for D．looking like
I borrow a book from my friend and I can ________ it for a week.
A．see B．buy C．lend D．keep
---- ________ class are you having? ---- Math.
A．What B．Which C．When D．Why
I don’t like physics ______ it’s too difficult for me.
A．and B．so C．because D．but
---- It’s time _____ lunch. ---- OK. Let’s _____.
A．for; go B．for; going C．to; going D．to; go
