The monument was built in honor of the explorer who was believed _____ the river.
We_______onitforseveralhoursbutwehavenotyetreachedanyconclusion.
I ____ to go for a walk, but someone called and I couldn’t get away.
Salley________Beijing for Shanghai and________there ever since. You can go and pay her a visit on your way to Hangzhou.
—Why do you look so worried? —Fred left the company half an hour ago. His work _______ unfinished since.
If you __________ me, I will give you some advice.