Lily and Lucy are twins, they _____ good girls, they often help others.
| A．are all | B．all are |
| C．both are | D．are both |
The room there _______ many books inside.
| A．is | B．are | C．has | D．have |
Tom likes looking out ________ the playground __________ the classroom.
| A．at; of | B．of; at |
| C．of; from | D．at; from |
Which floor is your classroom ____________ that classroom building?
| A．on | B．in | C．on; in | D．in; on |
单词辨音 （本大题共5分，每小题0.5分）
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We were swimming in the lake _______ suddenly the storm started.
| A．until | B．while | C．when | D．before |