. --- Sarah said she wrote you a letter.
--- I wonder ______ she is writing to me about.
A.that | B.why | C.what | D.when |
It is uncertain____side effect the medicine will bring about,although about two thousand patients have taken it.
A.that | B.what | C.how | D.whether |
The other day,my friend John drove his car down the street at _______I thought was a dangerous speed andsurprised everyone in the car.
A.which,that | B.which,it | C.as,which | D.what,that |
The lack of eco-friendly habits among the public is thought to be a major ____ of global climate change.
A.result | B.cause | C.warning | D.reflection |
Arriving home,the boy told his parents about all the________which occurred in his dormitory.
A.occasions | B.incidents | C.matters | D.accidents |
There’s a _____ in our office that when it’s somebody’s birthday, they bring in a cake for us all to share.
A.tradition | B.balance | C.concern | D.relationship |