We were playing near the lake______ the storm started.

Scientists study ___________ human brains work to make computer.

________ I’m __________ about the work. I’m not strong enough for it.

 ________ he can work abroad next year will depend on his parents' will. 

—My son is addicted to drugs. He isn’t hopeless, is he?—Yes, _____ he mends his ways and starts all over.