动词填空。 1.Would you please give me some advice on ________ (swim)? 2.I’d like to, but I have something ________ (wash) today. 3.Nothing ________ (be) difficult if we put our heart into it. 4. ________ (not be) late for school. 5.Just now, Mr. Smith ________ (invite) us to join the skiing competition. 6.Don’t make any noise, Grandma ________ (sleep). 7.I’ll wait here for your mother until she ________ (return) from work. 8.The monkey ________ (hide) themselves under the trees when it was rainy. 9.He with his friends usually ________ (play) football after school. 10.What are yon going to do? How about ________ (go) out to play football?