Which of the following sentences is a fact?( )
A.Beijing is the capital of China.
B.The new park looks beautiful.
C.Some subjects are difficult.
D.I think my pet dog is very cute.
Didn't you hear Dad call you?
No,I didn't.I _____ with Jack on the phone.( )
A.am talkingB.would talk
C.have talkedD.was talking
The traveler _____ his map to make sure he was not lost.( )
A.looked afterB.looked up
C.looked forD.looked down
The teacher changed my seat to the front so that I could see the words on the blackboard _____.( )
A.nearlyB.hardlyC.closelyD.clearly
The sports meeting won't be put off _____ it rains.( )
A.untilB.ifC.unlessD.whether
Just be _____;you can't lose your weight in a day.( )
A.carefulB.patientC.honestD.brave