-Young man, come off the grass; we forbid________ on the grass here.
-Sorry, I didn’t notice it.

— Have you forgotten ___________ a ruler from Wang Ling?
—Oh, yes. But I’ll remember _________ it to her tomorrow.

He _________ desperately in vain for something to say to break the silence.

Hurricane Sandy hit America violently.__________, about 140 deaths were caused by it.

John’s ability to learn from observations and experience _______ greatly to his success in public life.

Male nurses can see things from a different angle than women and bring a male way of thinking _____problems.

My friend Shelly is ________ stupid. However, she is pretty smart.

__________ is known to all, China will he an ________ and powerful country in 20 or 30 years' time.

These plants are watered___________

While typing, Helen has a habit of stopping ______ to give her long and flowing hair a smooth.
A  now and then     B.over and over     C.up and down    D.here and there