Each of the following sentences has four underlined words or phrases. They are marked (A), (B), (C) and (D) but there is only ONE mistake in each sentence. Identify and correct it.

She has to catching (A) the (B) next train or else she will (C) spend the night at the (D) platform.
Mitch did (A) his test so quick (B) that he must have known (C) all the answers (D) before.
Mary got used to speak (A) French fluently (B) after having spent a year (C) in Paris (D).
Many questions concerning their future expedition has (A) been raised (B) but not one has been (C) as heatedly discussed as this one (D).
We visited (A) yesterday (B) our grandmother to tell (C) her the sad news (D).
There were (A) eight childs (B) at my lesson today but your child (C) was not (D) among them.
The only students (A) whom the teacher (B) asked speaking (C) at the conference were (D) Sam, George, Jerry and I.
It's (A) quite an amused party (B) and now when it is time to leave (C), nobody wants (D) to go home.
The coffee that your brother is making (A) in the kitchen (B) is smelling (C) delicious (D).
People (A) usually wears (B) clothing for two different (C) reasons (D) - warmth and decoration.
Guppies are sometimes called (A) rainbow fishes (B) because of the males’ (C) bright colors (D).
Serving several terms (A) in Congress (B), Shirley Chisholm, became (C) the (D) important politician.
The policeman (A) told the passengers (B) in the bus to sit (C) quiet (D).
The tourists wanted to spend (A) the weekend in the (B) mountain hotel but was not able (C) to raise (D) enough money.