1 . The government, however, does not ____________ to stop the protection programs since the threats to the Tibetan antelopes have not yet disappeared. (根据句意填空)

2 . She enjoys singing ________ than dancing. (用适当的词填空)

3 . Historically, Chinese immigrants ________ in the area during the railroad construction and gold rush period.

4 . I not only spoke English very carefully, but very clearly __________(根据句意填空)