So far the work ______ easy but things may change. Therefore, we should still keep being cautious.
| A．is | B．was | C．has been | D．will be |
更新时间：2024-04-09 19:46:41
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【推荐1】Since the start of their career, there have been plenty of ________, but they still persevere.
| A．ins and outs | B．ups and downs | C．dos and don’ts | D．back and forth |
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【推荐2】The publishing firm is doing a survey and they are delighted with the replies they________ from the public so far.
| A．received | B．receive | C．are received | D．have received |
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