—I called you last night, but no one answered.
—Sorry. I ________ at that time.
A.watched TV B.watches TV
C.am watching TV D.was watching TV
Your father is sleeping. Please stop ____ .
A.to sing B.sing
C.singing D.sings
The skirt is made of silk. It ______ comfortable.
A.smells B.feels C.sounds D.tastes
The North Star is one of _____________ stars in the night sky.
A.bright B.brighter C.brightest D.the brightest
—________ do you play computer games?
—Twice a week.
A.How often B.How long C.How many D.How much
The children plant trees in the park ________ March 12th every year.
A.at B.on C.in D.to
