I’ve made some good friends with several of those students in my school ________ I met in the cross-talk show last month.
Can you think of a _____ in which you could use this expression.
– What do you think of the book ? -- Oh, excellent. It’s worthy ______ a second time.
It was some time _____ we realized the truth.
Having a trip abroad is certainly good for the old couple, but it remains _____ whether they will enjoy it.
—What does this sentence mean ? --- It seems to me that it ________.