As there is less and less coal and oil, scientists are exploring new ways of making use of ______________ energy, such as sunlight, wind and water for power and fuel.
Even though the conference hall is near his apartment, he has to hurry a little if he wants to be_____.
Don’t worry. I’m sure your missing glasses will ______ sooner or later.
There is no doubt that this candidate's advantagehis ability to communicate with foreigners in English.
In order not to be heard, she pointed her finger upwards tothat someone was moving about upstairs.
The team are working hard to ___ the problem so that they can find the best solution.