There is no doubt _____ man will continue to explore the vast universe in the future, but the rate at which we approach depends on the development of technology.[ ]

. She’s pretty _______ with money. She wouldn’t give even a cent to help the poor child.

Experts say ________ to sunlight for too muchtime will do harm to one’s skin

Tom considered looking for a(n)____job in the summer vacation so that he could save up some money to go traveling.

She kept a little notebook, in which _______ the telephone numbers and email addresses of her friends