This sentence is too hard _____________ me understand.-Don’t worry. Let me explain it you. [ ]

When he was awake, she found she was lying on _______ seemed to be a piece of stone.

The room is not bright enough. I need to a light on the ceiling.

. My uncle will come to Shanghai ______ next week .He says he will stay here for______.

Mike has much difficulty ________ Chinese so he often asks me ________ help.