For security reasons, always log ______ when you leave your computer unattended for any period of time.
A: on
B: B. up
C: C. in
D: D. out
A: on
B: B. up
C: C. in
D: D. out
举一反三
- For security reasons, always log ______ when you leave your computer unattended for any period of time. A: on B: up C: in D: out
- Time is limited and you must_______ your plan in no time. A: come about B: take up C: care fo D: carry out
- If you absolutely must leave class before being dismissed, you _______. A: explain to your instructor before class that you will have to leave earlier, get the permission, and slip out of the back door quietly when time is up. B: gather your things quietly, nod to your instructor on your way out and say, “Excuse me.” C: pack up your backpack, put your jacket on and slip out of the back door.
- (you, lock, always) the door to your apartment when you (leave)
- If you find it difficult to ______ , please stop me any time. A: snatch up B: summon up C: catch on D: watch out