điền vào chỗ trống
i (lose) my key . can you help me look for it?
my teacher wasn't at home when i (arrive) . he (go) out
how long bob and mary (be) married?
i (not see) her for a long time
tom (study) chemistry for 3 days and then he gave it up
i think he (leave) as soon as he (know) the news
violets (bloom) in spring
điền vào chỗ trống
i (lose) have lost my key . can you help me look for it?
my teacher wasn't at home when i (arrive) arrived . he (go) had gone out
how long have bob and mary (be) been married?
i (not see) haven't seen her for a long time
tom (study) has studied chemistry for 3 days and then he gave it up
i think he will leave (leave) as soon as he knows (know) the news
violets bloom (bloom) in spring