She is one of the class advisers____ to give opinion on the meeting.
A. who have been invited
B. who has been invited
C. whom they have invited him
D. whom has been invited
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9.Cattle ____ on one side of the hill.
A. grazes
B. is grazing
C. was grazing
D. were grazing
Many a people ____ the importance of mastering computer.
A. have realized
B. has realized
C. have been realized
D. has been realized
【2014-7 一级建造师】除双方当事人意思表示一致以外,尚须交付标的物才能成立的合同,成为( )。
A. 要式合同
B. 实践合同
C. 有偿合同
D. 双务合同
【2018 二级建造师】关于合同形式的说法,正确的是( )。
A. 合同必须采用书面形式
B. 口头形式属于合同的其他形式
C. 未依法采取书面形式订立的合同无效
D. 合同可以采用数据电文形式