—Can you lend me the book Gone with the Wind?
—Sorry. I returned it to the library just now. Maybe it is still ______.
| A．affordable | B．acceptable | C．available | D．avoidable |
________ in the traffic jam, she failed to catch the train, which mader her upset.
| A．Catching | B．Having caught | C．To catch | D．Caught |
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 |