注册

题型：单选题题类：模拟题难易度：普通

——When _____ the abacus _____? ——In the sixth century by the Chinese people.

A、is, invented B、did, invent C、was, invented D、does, invent

举一反三

Barack Obama ________ the 44^th President of the United States.

The Eighth Beijing International Film Festival _____in Huairou on April 15^th, 2018.

他们的信通过邮寄的方式送出。

Their letters{#blank#}1{#/blank#} {#blank#}2{#/blank#} {#blank#}3{#/blank#} {#blank#}4{#/blank#}.

The sports meeting was {#blank#}1{#/blank#} (取消) because of the terrible weather.

We couldn't buy the tickets because all the tickets _______.

The big building was _____ down last week.

返回首页

相关试卷

试题篮

公司介绍

Company Introduction

服务介绍

Service Introduction

帮助中心

Help center

二一教育APP

二一教育APP

400-637-9991

周一至周五 8:30-17:30

在线咨询客服