Tu Yoyo devoted herself ________to her research and it made her famous in her field.

When shall we start—Let’s _____ the time for the trip. What about 8:30Is that all right

The mail was _____ for two days because of the snow storm.

Brown said he was by no means annoyed;___________ he was glad to be able to make himself clearly understood.

_____ they’re brother and sister, they don’t look the same.