(用所給單詞的適當(dāng)形式填空) Don't ________ (throw) the rubbish everywhere.It is a bad habit.

(根據(jù)漢語提示寫出句中所缺單詞) My grandma has many black ________(鴨子) in her garden.

(根據(jù)漢語提示寫出句中所缺單詞) I want to look up the new words in the ________(字典).

(根據(jù)漢語提示寫出句中所缺單詞) Can you ________(描述) your bike?I will help you find it.

(根據(jù)漢語提示寫出句中所缺單詞) In the 19th ________(世紀(jì)),people had no computers at all.

(用所給動詞的正確時態(tài)填空) Look! Some boys _________ (swim) in the river. They often __________ (swim) there．

(用所給動詞的正確時態(tài)填空) He ________ already _________ (learn) fifty words until now.

(用所給動詞的正確時態(tài)填空) My mother __________ (teach) at a middle school．She __________ (work) very hard.

(用所給動詞的正確時態(tài)填空) My sister ________ already _________ (finish) her homework. Now she __________ (watch) TV．

(用所給動詞的正確時態(tài)填空) I ________ (know) her for a long time．I first __________ (meet) her in the street.