Every student should spend .......... least two hours on his homework every night.

These photographs were taken _____ a friend of mine.

Yesterday, I was talking ______my doctor ______a mysterious epidemics near here.

He aimed .......... the tiger.

We reached ______ her house safe and sound.

We just rested _________ a short time.

.............. of the concert, there was great applause.

“Where’s the light switch?” “It’s ........ the wall ........... the door.”

We’re having a party ......... Sunday. Can you come?

My headaches have been much better since I gave ____________ drinking coffee.

Governments have enacted laws to protect wildlife ________commercial trade and overhunting.

I'm interested (at/in/on/of) current events.

Was your friend successful ___________ getting a loanfrom the bank?

She prefers carnations __________roses. In fact, she dislikes roses.

We are looking forward ....... seeing you again.

She wanted to borrow some books__________ him but she was shy ______________ asking.

Do you believe _______ ghosts?

Your words are contrary (to/in/on/of) your acts.

Instead ......... .petrol, cars will only run .......... solar energy and electricity.

Vietnam carried _________an intensive program for its athletics, which included training in facilities, both home and abroad.

Everybody was surprised ..... the news.