The young man got up immediately as the woman got on the bus and let her _______ his seat.

----Another cup of tea? That’s your third since lunch.    ----Yeah, well, I ____ all night preparing for my history exam. I can hardly keep my eyes open.

Outdoor activities are as much a part of childhood for this generation of Chinese children as they __________ for their parents and grandparents.

Keep it in mind not to disturb the president at two o’clock this afternoon, when he ____ a global joint meeting. 

With the rapid development of medical science, we ________ more new drugs used in the treatment of cancer.