Listen! She____in the classroom. A: is singing B: sing C: to sing D: is sing
Listen! She____in the classroom. A: is singing B: sing C: to sing D: is sing
He ________ in the next room. A: is often heard to sing B: often heard to sing C: is often heard sing D: is often hearing to sing
He ________ in the next room. A: is often heard to sing B: often heard to sing C: is often heard sing D: is often hearing to sing
Listen!Joan__________(sing)intheclassroom.Sheoften__________(sing)there.
Listen!Joan__________(sing)intheclassroom.Sheoften__________(sing)there.
listen! Some girls in the classroom. A: are singing B: sing C: is sing
listen! Some girls in the classroom. A: are singing B: sing C: is sing
Listen, who_________(sing) in the music room? Oh, Mary_______(sing) there.
Listen, who_________(sing) in the music room? Oh, Mary_______(sing) there.
Cold doth not sting, 3)___________________: Cuckoo, jug-jug, pu-we, to-witta-woo! A: the pretty birds do sing B: the pretty bird does sing C: the pretty birds sing D: the happy birds do sing
Cold doth not sting, 3)___________________: Cuckoo, jug-jug, pu-we, to-witta-woo! A: the pretty birds do sing B: the pretty bird does sing C: the pretty birds sing D: the happy birds do sing
It<br/>is a good time _______. A: sing B: to sing C: singing D: sang
It<br/>is a good time _______. A: sing B: to sing C: singing D: sang
Most of the young people enjoy ______ the popular songs. A: sing B: to sing C: singing
Most of the young people enjoy ______ the popular songs. A: sing B: to sing C: singing
I often hear her ______. A: sung B: to sing C: sing D: sang
I often hear her ______. A: sung B: to sing C: sing D: sang
电力变换通常包括那几类？ A: AC/DC和DC/AC两大类。 B: AC/DC、DC/AC、DC/DC、AC/AC四大类。 C: AC/DC、DC/AC、DC/DC三大类。 D: DC/AC、DC/DC、AC/AC三大类。
电力变换通常包括那几类？ A: AC/DC和DC/AC两大类。 B: AC/DC、DC/AC、DC/DC、AC/AC四大类。 C: AC/DC、DC/AC、DC/DC三大类。 D: DC/AC、DC/DC、AC/AC三大类。