By the time Einstein was 14 years old, he himself advanced mathematics.
The prize of the game show is $30,000 and an all expenses __________ vacation to China.
She's too thin. She ____ gain some weight but she _____ too little.
--- Mum, why do you always make me eat an egg every day ?--- ____ enough protein and nutrition as you are growing up.
He transplanted the little tree to the garden _____ it was the best time for it.
“Is there _____ here?” “No, Bob and Tim have asked for leave.”