She usually finishes work ___ 5 p.m. A. by B. at C. on D. until Explanation: We use at with exact times.
He returned home ___ dawn. A. in B. on C. at D. by Explanation: We use "at" with time points such as "dawn".
The library is especially quiet ___ exam week. A. during B. for C. since D. on Explanation: We use during with a named period.
We talked ___ hours after the power returned. A. since B. at C. for D. during Explanation: We use "for" with a duration.
The package should arrive ___ noon tomorrow. A. until B. by C. at D. on Explanation: We use "by" to indicate the latest time something should happen.
She learned to drive ___ her twenties. A. on B. in C. at D. since Explanation: We use "in" with decades and life periods, such as one’s twenties.
I felt sleepy ___ the meeting. A. during B. at C. for D. on Explanation: We use during for something that happens within an event or period.
The team practices ___ Tuesdays and Thursdays. A. during B. at C. on D. in Explanation: We use on with named days.
The town looks beautiful ___ autumn. A. on B. in C. at D. during Explanation: We use in with seasons.