.Work on Rome’s Palatine Hill has turned up a series of discoveries, including____ might be the underground cave .
________ a difficult situation, so you should send a message to him and give some advice to him .
It was dark______ we arrived at the little town .
—Oh, I failed again—Don’t lose heart. One more time, ________ you will succeed.
Mary does every single bit of housework ______her husband Bob just does the dishes at times.
Tom enjoyed himself so much _____ he visited his best friend in Beijing last year.A. that B which C. when D.where