28. —Did you hear Tom was criticized for his spelling mistakes in his English composition?—Yes, but a more careful person ________ so many mistakes.
You'd better __________ your reasons right now. We have no time to waste.
They have a good knowledge of history but little __________ they know about geography.
It wasn't until nearly a month later __________ I received the manager's reply.
I got to the office earlier that day,__________ the 7 : 30 train from Paddington.
These two buildings are similar to each other in many _____ .