D. Dad
In this sentence, dad is being used as a name or proper noun. It needs to be capitalized.
Answer:
They kept MAKING it WORK very hard for months.
Explanation:
keep + v_ing
make sb/sth + do sth
Answer:
"I put on my PLAID bathrobe..."
"was covered in DENSE fog."
"As I was trying to PROD the window closed..."
"I thought of the THREAT of..."
"...full of DREAD."