The little boy often has____ big breakfast，so he looks really strong.
A．the B．／ C．a D an
I don’t speak any French. I wish I _______ harder when I was at school.
| A．had worked | B．worked | C．would work | D．work |
He was seriously injured last week and that’s _______ he didn’t participate in the competition.
| A．when | B．how | C．why | D．what |
Hearing the doctor announce their son was safe and sound, the couple sighed with ________.
| A．satisfaction | B．relief | C．interest | D．permission |
Anyone _______ wants to learn something can sign up for the online courses.
| A．which | B．who | C．whose | D．whom |
You should never judge a person ________ his looks.
| A．by | B．on | C．in | D．with |