Mary, I heard there was an explosion in Luzhou. Could you tell me how it _______?—Sorry, I don’t know much about it either.

Is this the first time you______ Chengdu—–No. But the first time I______ here, thecity wasn’t so beautiful

thekey to the cme.Finally I could drive himhomeas usual.

The hunter shot at a rabbit but it escaped _____. [ ]

Radium salts，which have been found to ______ in bones，give rise to bone cancer.