_____to his research work, the professor cared little about any other things．
| A．Devoting | B．Devoted | C．Having devoted | D．To devote |
open
| A．become | B．across | C．lonely | D．balcony |
--- Jack, I’d like to have your opinions about my written report.
--- _______. But I have one suggestion.
| A．That’s a good idea | B．You are too modest |
| C．It looks fine to me | D．You should check it first |
Half an hour later, Lucy still couldn’t get a taxi _______ the bus had dropped her.
| A．until | B．when | C．although | D．where |
It was John who broke the window. Why are you talking to me as if Iit?
| A． | had done | B． | have done | C． | did | D． | am doing |
--- Is it true that Mike refused an offer from Yale University yesterday?
--- Yeah, but I have no idea _______ he did it; that’s one of his favorite universities.
| A．when | B．why | C．that | D．how |