I'm sorry I didn’t phone you，but I've been very busy_____ the past couple of weeks．
A．beyond B．with C．among D．over
---Are you going to Tom’s birthday party?
---________．I might have to work．
A．It depends B．Thank you C．Sounds great D．Don’t mention it
He had his camera ready ____he saw something that would make a good picture．
A．even if B．if only C．in case D．so that
Look over there--- there’s a very long，winding path _____up to the house．
A．leading B．leads C．led D．to lead
I'm afraid he’s more of a talker than a doer, which is ____ he never finishes anything．
A．that B．when C．where D．why
They are broadening the bridge to ____ the flow of traffic．
A．put off B．speed up C．turn on D．work out
