—Mr. White has decided to explore in the forest by himself.—He __ ask his brother to if he ___ go walking in the forest.
49. I don’t know whether small oranges are sweeter than big ______.
50. When they met, they stopped and said hello to_______.
51. After everyone took_______ place, the meeting began.
52. -Why don’t we take a little break? -Didn’t we just have _______?
53. If you want to change for a double room you’ll have to pay ___$15.