__________is work that involves studying something and trying to discover facts about it. 

I turned down the job,________ the attractive salary. 

Each nation has its own way of ______ the New Year. 

He ______ me to have dinner with him that night. 

Carlos was _______ the first prize in the essay competition. 

The lifeguard _______ them not to swim too far from the shore.

Linda is thanking Daniel for his birthday present. - Linda: "Thanks for the book. I've been looking for it for months."- Daniel: "______." 

He doesn’t catch anything. = He never catches ____________.

He could do nothing . = He couldn’t do ________.

The number of injuries from automobile accidents ______ every year. 

We all believe that a happy marriage should be _______ mutual love. 

I am not used to the cold weather here, so I need to have a heating system ____. 

Time was up, and the judges ________ the results. 

Domestic appliances like washing machines and dishwashers have made ______ life much easier. 

Peter is disappointed at not getting the job, but he will ______ it soon.