Do you find ( )difficult( )Chinese as asecond language?I thi

題目：

Do you find ( )difficult( )Chinese as asecond language?I think so.But I never want to give it up.
A.this,learn B.it,to learn C.that,learning
2.Can you lend me 50yuan?Sure ,but you must ( )it( )me next Monday.
A,repay back,to B.pay,for C.repay,to

解答：

選B it 做find 的形式賓語,真正的賓語是動詞不定式
選C repay 不與back 連用