问题

I saw BettytoGrandpa Li’s home just now.—Yes. She’s often seen _________ the old man withthe housework.
A:go, help
B: going, tohelp
C:go, to help
D:going, helps
B: going, tohelp
C:go, to help
D:going, helps
正确答案是:
同类题型
–Why don’t you stay at the Baotuquan Hotel? –You ! Do you know how expensive that place is?
Why, Jack! Someone seems to have called you over there.—Yes? I _______ that.
Which is smaller, the sun _____________themoon
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Hurry up! Bob, Time is______________and I’m afraid you’ll miss the deadline.